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Simone TranquilliThree images of the solar disk, acquired using three different filters: O-III, Ca-K and the solar ERF, mainly used with the H-Alpha Quark.The idea was to compare the results with the simple white light (just the Herschel wedge) and the O-III filter and check for improvements in contrast and details of sunspots and faculae.In addition, an image of the central area of the solar disk, with some of the main active regions on those days.Follow the link below to see the original mono images in full resolution and read their technical details.<a href="https://www.localvoid.net/2025/04/20/solar-mosaics-in-different-wavelengths-experimenting-with-filters-25-december-2024/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.localvoid.net/2025/04/20/solar-mosaics-in-different-wavelengths-experimenting-with-filters-25-december-2024/</a><a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/ca" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ca</a>-k <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Simone TranquilliSix images of the Sun in H-Alpha. During that session, the solar limb didn’t show any relevant prominences, so all the data was focused on the active regions. Follow the link for the full res images and details.<a href="https://www.localvoid.net/2025/04/13/the-sun-in-h-alpha-light-25-december-2024/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.localvoid.net/2025/04/13/the-sun-in-h-alpha-light-25-december-2024/</a><a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotographpy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotographpy</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Santiago Andrés Triana<a href="https://fediscience.org/tags/Sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sunspot</a> groups AR4055 (bottom) and AR4058 (top) yesterday as they rotate out of view and approach the West solar limb. <a href="https://fediscience.org/tags/Solar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Solar</a> cycle 25 is just past its activity maximum. <a href="https://fediscience.org/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://fediscience.org/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://fediscience.org/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a>

DanPartial solar eclipse of 29.03.2025 taken from Germany near Cologne <a href="https://pixey.org/discover/tags/solareclipse?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#solareclipse</a> <a href="https://pixey.org/discover/tags/solareclipse2025?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#solareclipse2025</a> <a href="https://pixey.org/discover/tags/sonnenfinsternis?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sonnenfinsternis</a> <a href="https://pixey.org/discover/tags/sofi?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sofi</a> <a href="https://pixey.org/discover/tags/sofi2025?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sofi2025</a> <a href="https://pixey.org/discover/tags/astrodon?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrodon</a> <a href="https://pixey.org/discover/tags/sunspot?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> <a href="https://pixey.org/discover/tags/sunspots?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspots</a> <a href="https://pixey.org/discover/tags/sonnenflecken?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#sonnenflecken</a>

KibbetTook the trusty old telescope out to capture some pics of the partial eclipse. Nice big chunky sunspot too. <a href="https://mstdn.social/tags/Eclipse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Eclipse</a> <a href="https://mstdn.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://mstdn.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> <a href="https://mstdn.social/tags/Astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a>

Pierre LindenbaumPartial Solar Eclipse ~11H50 . March 29th 2025. <a href="https://genomic.social/tags/Nantes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Nantes</a> France. (with a small sunspot in the upper right part)<a href="https://genomic.social/tags/eclipse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eclipse</a> <a href="https://genomic.social/tags/solareclipse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#solareclipse</a> <a href="https://genomic.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://genomic.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> <a href="https://genomic.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a>

Vinz Franktake a look at the impressive sunspot AR3664! I took this photo last year :) These fascinating structures on the solar surface demonstrate the dynamic nature of our sun. Sunspots are not only beautiful to look at, but also important indicators of solar activity.☀️🔭 <a href="https://pixelfed.social/discover/tags/Sunspot?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sunspot</a> <a href="https://pixelfed.social/discover/tags/AR3664?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#AR3664</a> <a href="https://pixelfed.social/discover/tags/Astronomy?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astronomy</a> <a href="https://pixelfed.social/discover/tags/Sun?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sun</a> <a href="https://pixelfed.social/discover/tags/Space?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Space</a> <a href="https://pixelfed.social/discover/tags/SolarActivity?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#SolarActivity</a> <a href="https://pixelfed.social/discover/tags/Astrophotography?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Astrophotography</a> <a href="https://pixelfed.social/discover/tags/SpaceLovers?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpaceLovers</a> <a href="https://pixelfed.social/discover/tags/Nature?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Nature</a> <a href="https://pixelfed.social/discover/tags/Science?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a> <a href="https://pixelfed.social/discover/tags/AstronomyLovers?src=hash" class="u-url hashtag" rel="nofollow noopener noreferrer" target="_blank">#AstronomyLovers</a>

Simone TranquilliLast session in august 2024, before a long pause until december.To see the full set of images follow the link<a href="https://www.localvoid.net/2025/03/23/the-sun-in-h-alpha-light-31-august-2024/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.localvoid.net/2025/03/23/the-sun-in-h-alpha-light-31-august-2024/</a><a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://astrodon.social/tags/SuninHAlpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SuninHAlpha</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Santiago Andrés TrianaThe <a href="https://fediscience.org/tags/Sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sun</a>'s surface. The <a href="https://fediscience.org/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> here is Active Region 4018 as seen yesterday through my <a href="https://fediscience.org/tags/telescope" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#telescope</a>. The granular texture is from the strong convective motion of the <a href="https://fediscience.org/tags/solar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#solar</a> <a href="https://fediscience.org/tags/plasma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#plasma</a>, very much like the convective patterns we see in a pot of boiling water. <a href="https://fediscience.org/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a>

John Vaccaro (johniac)SciTech Chronicles. . . . . . . . .Mar 5th, 2025<a href="https://bit.ly/stc030525" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://bit.ly/stc030525</a><a href="https://mastodon.social/tags/cornea" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cornea</a> <a href="https://mastodon.social/tags/epithelial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#epithelial</a> <a href="https://mastodon.social/tags/transplantation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#transplantation</a> #18-months <a href="https://mastodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> <a href="https://mastodon.social/tags/earthquake" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#earthquake</a> <a href="https://mastodon.social/tags/Prediction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Prediction</a> <a href="https://mastodon.social/tags/tectonic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tectonic</a> <a href="https://mastodon.social/tags/hydrosilylation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hydrosilylation</a> <a href="https://mastodon.social/tags/platinum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#platinum</a> <a href="https://mastodon.social/tags/silicon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#silicon</a> <a href="https://mastodon.social/tags/ligand" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ligand</a> <a href="https://mastodon.social/tags/AI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AI</a> <a href="https://mastodon.social/tags/entanglement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#entanglement</a> <a href="https://mastodon.social/tags/communication" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#communication</a> <a href="https://mastodon.social/tags/photons" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#photons</a> <a href="https://mastodon.social/tags/LiDAR" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LiDAR</a> <a href="https://mastodon.social/tags/Autonomous" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Autonomous</a> <a href="https://mastodon.social/tags/Farming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Farming</a> <a href="https://mastodon.social/tags/odometry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#odometry</a>

Simone TranquilliTwo more images from the recording session on 30 august. Each image is a mosaic composed by two panels. The Ha filter was set up to be off-band around the 656.28 nm wavelength, on the +5 and -5 Å wings allowed by the Combo Quark. In addition, the gain was modified to according to the wavelength shift.<a href="https://www.localvoid.net/2025/02/23/sun-in-h-alpha-light-30-august-2024-full-disk/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.localvoid.net/2025/02/23/sun-in-h-alpha-light-30-august-2024-full-disk/</a><a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

ScozmosMama always told me never look into the eyes of the sun, but mama ...... <a href="https://mastodonapp.uk/tags/sunrise" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunrise</a> <a href="https://mastodonapp.uk/tags/morningmist" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#morningmist</a> <a href="https://mastodonapp.uk/tags/haar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#haar</a> <a href="https://mastodonapp.uk/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a> <a href="https://mastodonapp.uk/tags/Scotland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Scotland</a> <a href="https://mastodonapp.uk/tags/Alyth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Alyth</a>

Simone TranquilliLast look at the Sun.<a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Simone TranquilliAR 3796, AR 3792, AR 3790 (656.28 nm and 656.33 nm), 26 august 2024Details and better quality images:(656.28 nm) <a href="https://astrob.in/25vvwx/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/25vvwx/0/</a>telescopius.com/pictures/vie...(656.33 nm) <a href="https://astrob.in/87h1hc/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/87h1hc/0/</a>telescopius.com/pictures/vie...<a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Simone TranquilliAR 3796 , 656.23 nm and 656.33 nm, 26 august 2024Details and higher quality images: (656.23 nm) <a href="https://astrob.in/29xo34/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/29xo34/0/</a><a href="https://telescopius.com/pictures/view/209075/sun/sun-in-h-alpha-light-656-23-nm-26-august-2024-ar-3/by-simotranquilli" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://telescopius.com/pictures/view/209075/sun/sun-in-h-alpha-light-656-23-nm-26-august-2024-ar-3/by-simotranquilli</a>(656.33 nm) <a href="https://astrob.in/25cdik/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/25cdik/0/</a>telescopius.com/pictures/vie...<a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Simone TranquilliSun In H-Alpha light (656.23 nm), 26 august 2024. AR 3799 and AR 3800 <a href="https://astrob.in/29xo34/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/29xo34/0/</a><a href="https://telescopius.com/pictures/view/209074/sun/sun-in-h-alpha-light-656-23-nm-26-august-2024-ar-3/by-simotranquilli" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://telescopius.com/pictures/view/209074/sun/sun-in-h-alpha-light-656-23-nm-26-august-2024-ar-3/by-simotranquilli</a>Imaging Telescope: TS-Optics Photoline 102mm f/7 FPL53 Triplet ApoImaging Camera: ZWO ASI585MC (Exposure: 5 ms. Gain: 235. Bit depth: 8 bit. Sensor temperature: 48.3 °C)Mount: Sky-Watcher AZ-EQ6 PROFilters: - DayStar Combo Quark Chromosphere - Player One S-Series ERF 1.25" - Player One S-Series UV IR-Cut 1.25"Accessories: - Lacerta 3x Tele Extender - GSO 35 mm extension tubeSoftware: - FireCapture - PlanetarySystemStacker (debayer, alignment and stacking) - Pixinsight (color curves, deconvolution, multiscale linear transform, fast rotation ) - Operating system: Debian GNU/Linux 12 "Bookworm"<a href="https://astrodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://astrodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://astrodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Estrellas Compartidas ☮️☀️ 🔭 🥰 El Sol hoy, más temprano. Fotos a foco primario, 2x y 5x.Aprovechando, luego de par de días de nubes, la posibilidad de subir hasta 5x.<a href="https://mastodon.social/tags/Sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sun</a> <a href="https://mastodon.social/tags/Sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sunspot</a> <a href="https://mastodon.social/tags/Gimp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Gimp</a>

New Mexico NomadThe Apache Point Observatory is an astronomical observatory located in Sunspot, New Mexico, approximately 18 miles south of Cloudcroft. There are several telescopes gathering data for a variety of stakeholders, including the Sloane Digital Sky Survey.<a href="https://mstdn.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mstdn.social/tags/roadtrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#roadtrip</a> <a href="https://mstdn.social/tags/travel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#travel</a> <a href="https://mstdn.social/tags/daytrip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#daytrip</a> <a href="https://mstdn.social/tags/Cloudcroft" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cloudcroft</a> <a href="https://mstdn.social/tags/Sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sunspot</a> <a href="https://mstdn.social/tags/NewMexico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NewMexico</a>

Simone TranquilliSun in H-Alpha light (656.23 nm) 23 august 2024. A family portrait: AR 3796, AR 3792, AR 3790 <a href="https://astrob.in/zlupfl/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/zlupfl/0/</a><a href="https://telescopius.com/pictures/view/206761/sun/sun-in-h-alpha-light-656-23-nm-23-august-2024-a-fa/by-simotranquilli" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://telescopius.com/pictures/view/206761/sun/sun-in-h-alpha-light-656-23-nm-23-august-2024-a-fa/by-simotranquilli</a>Stack of the best 750 frames out of 1500<a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mastodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://mastodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://mastodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://mastodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

Simone TranquilliSun in H-Alpha light (656.23 nm) 23 august 2024: AR 3790 Stack of the best 1000 frames out of 10000<a href="https://astrob.in/f8he0q/0/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://astrob.in/f8he0q/0/</a><a href="https://telescopius.com/pictures/view/206759/sun/sun-in-h-alpha-light-656-23-nm-23-august-2024-ar-3/by-simotranquilli" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://telescopius.com/pictures/view/206759/sun/sun-in-h-alpha-light-656-23-nm-23-august-2024-ar-3/by-simotranquilli</a><a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astronomy</a> <a href="https://mastodon.social/tags/astrophotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#astrophotography</a> <a href="https://mastodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sun</a> <a href="https://mastodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#halpha</a> <a href="https://mastodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sunspot</a>

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