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M51 Whirlpool Galaxy by mredlinger

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Community tools and Hobby projects Astronomy tools Feb 14, 2026Salvatore IoveneAstroBin StaffIOTD StaffExemplary contributor Last post: Robert Gillette	64	3.3k	4 hours ago
Pixinsight astrometric annotation catalogs Pleiades Astrophoto PixInsight Astrometry Advanced +1 May 31, 2026Scott Stirling Last post: Scott Stirling	30	485	3 hours ago
Pixinlsight challenges for new problems ! Acquisition Calibration Processing +5 Jun 25, 2026Refet Dehari Last post: jkoz9901	10	236	30 minutes ago
MARS DR2 Release for Pixinsight MSGC Pleiades Astrophoto PixInsight Background Extraction Gradient Removal +3 Jun 22, 2026AstroGadac Last post: Rick Krejci	18	683	21 hours ago
RC Astro tools coming to Siril Russell Croman Astrophotography NoiseXTerminator Russell Croman Astrophotography BlurXTerminator Russell Croman Astrophotography StarXTerminator Jun 24, 2026Tony GondolaFrequent contributorExemplary contributor Last post: Tony Gondola	11	369	17 hours ago
Astrophotography Beginner Equipment Beginner Jun 10, 2026Alfie Ratty Last post: Chuck Korenic	16	271	18 hours ago
Hello to all astronomy enthusiasts. Off-topic Deep Sky Français Jul 1, 2025Nathalie DB Last post: Nathalie DB	57	1.4k	2 days ago
Does Siril Deconvolution Work? Siril Team Siril Deconvolution Processing Sep 17, 2024Szijártó Áron Last post: Tony Gondola	31	1k	1 day ago
Doubled stars in unguided 10Micron GM1000 tracking Guiding Jun 22, 2026Jerry GerberPerfect post Last post: Willem Jan Drijfhout	20	372	1 day ago
CORRECT ORIENTATION OF CHROMA FILTERS Equipment Filters Astronomy tools +2 Jun 26, 2026Riccardo Civati Last post: Bob Lockwood	3	73	4 hours ago
1997 NC1 Asteroid Backyard Astrophotography Asteroid Jun 25, 2026Paul CampbellFrequent contributor Last post: Paul Campbell	2	48	30 minutes ago
question about gso rc10 Flattener Ritchey-Chrétien Jun 24, 2026xiong junhaoNew contributor Last post: Seung-Jun Kim	6	165	20 hours ago
Juwei14 Juwei 14 Deep Sky Jun 25, 2026Andrey VoronovNew contributor Last post: Tareq Abdulla	1	64	6 hours ago
Cuiv on central obstruction Equipment Reflectors Optics Jun 21, 2026Tony GondolaFrequent contributorExemplary contributor Last post: andrea tasselli	28	976	2 days ago
ESATTO 2" focuser reports zero step size causing SharpCap autofocus issues PrimaLuceLab ESATTO 2" robotic focuser AstroSharp Ltd SharpCap Focuser +2 Nov 27, 2025Tom Utendorf Last post: GregsAstrobin	3	52	1 day ago
HAE69 C EC PHD2 Settings iOptron HAE69C EC Open PHD Guiding Project PHD2 Equatorial Mount +1 Jun 11, 2025Bob Rucker Last post: Kegan128	9	298	2 days ago
A comparison of BXT/NXT vs SyQon Russell Croman Astrophotography NoiseXTerminator Jun 15, 2026Daniel J. Givens Last post: Kyle Goodwin	22	1.1k	3 days ago
Askar SQA 106/130 vs Stellervue SVX102T Askar SQA106 Askar SQA130 Stellarvue SVX102T +2 Feb 9, 2026Thomas Rider Last post: Thomas Rider	10	483	3 days ago
Hello everyone there are some images captured by me. from my F30070M, 70mm refractor telescope using 3x barlow and 20mm eyepiece and phone camera Acquisition Solar System Galaxy +1 Jun 18, 2026yash0661 Last post: SonnyE	2	145	3 days ago
Astro Color Mixer in Pixinsight Pleiades Astrophoto PixInsight Processing Backyard Astrophotography Jun 23, 2026Aloke Palsikar Last post: Cosgrove's Cosmos (Patrick Cosgrove)	1	125	3 days ago
Seeking matching RGB and narrowband image data for analysis Acquisition Processing H-alpha +9 Jun 24, 2026Interactive Sky	0	40	1 day ago
Altair 3.5nm vs Antlia ALP-T 3nm Dual Band Filters…? Equipment Filters Duo-Narrowband +3 Jun 9, 2026Ben Jansen Last post: Ben Jansen	4	115	3 days ago
Tracking and guiding accuracy iOptron HAE69C EC Harmonic Mount Equatorial Mount Mar 9, 2025Tobiasz Last post: Wes Schwarz	4	275	4 days ago
Halo issues with L extreme filter on Skyrover 90SAP setup Filters Artifacts Troubleshooting Jun 18, 2026Swee Sin Eng Last post: Swee Sin Eng	13	143	4 days ago
Celestron GPS11 with fungus Reflectors Backyard Astrophotography Jun 19, 2026Paul CampbellFrequent contributor Last post: Paul Campbell	9	175	4 days ago
Seestar S50 Linux control via KStars EKOS INDI Alpaca ZWO Seestar S50 INDI Library Ekos KDEdu KStars +4 Jun 3, 2026Oscar A. Castro-Artola Last post: Wouter van Reeven	2	57	3 days ago
OCAL 4.0 Collimator & MacBook Pro a non starter? Sharpstar 13028HNT Collimation Help Needed Jun 14, 2026JTSAN Last post: TiffsAndAstro	2	84	4 days ago
Roll Off Roof Problem Astronomy tools Jun 21, 2026Mossyback Last post: Tony Gondola	3	112	4 days ago
Diagnostic Help: Progressive Frame Drift Despite Active Autoguiding Open PHD Guiding Project PHD2 Deep Sky Nebula +1 Jun 17, 2026Yko Last post: Tony Gondola	37	320	6 days ago
Is the so called “60%” rule a thing for strainwave mounts ? Harmonic Mount Buying Advice May 23, 2026Eric Gagné Last post: TimW	34	962	7 days ago
Remember when??? Acquisition Artifacts Satellite Jun 11, 2026Jeffery Richards Last post: Tony Gondola	45	841	7 days ago
NINA Safety monitor doesn't reflect safe/unsafe state once connected to Lunatico AAG CW safety driver Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)The ASCOM Initiative ASCOM Troubleshooting Jun 17, 2026Frédéric Ruciak Last post: Frédéric Ruciak	8	284	6 days ago
Is this dew? Troubleshooting Jun 17, 2026SkyHoinar Last post: Scott Badger	12	276	6 days ago
External focuser on an SCT; What about temperature change induced focal shift and back-focus? Celestron EdgeHD 11"Celestron EdgeHD 14"Celestron EdgeHD 8" +1 Mar 25, 2026John Stone Last post: Paul Larkin	47	1k	8 days ago
Red halo in the brightness stars. UV/IR Cut Help Needed Troubleshooting Jun 20, 2026Lalo Juarez	0	57	5 days ago
EAF on minicat51 de WO ZWO EAF Focuser Refractors +2 Jun 20, 2026Lalo Juarez Last post: Lalo Juarez	2	41	5 days ago
Mining company threatens dark skies and remote telescope facilities in S.W. New Mexico / S.E. Arizona Dark Site Light Pollution Remote Astrophotography +1 Jun 7, 2026darkdesertdome Last post: darkdesertdome	40	935	8 days ago
Look Ma, No Clips! Equipment Reflectors DIY Jun 19, 2026andrea tasselliFrequent contributor Last post: Tony Gondola	1	148	6 days ago
Deep-sky performance difference of 585MC-Air vs. 533MC-Pro? ZWO ASI533MC Pro ZWO ASI585MC AIR ZWO ASI585MC Pro +1 Jun 18, 2026Phil Creed Last post: Tony Gondola	8	150	7 days ago
Stacked SII image shows wave pattern noise at 1200s exposure Acquisition Deep Sky M27 +2 Jun 17, 2026jujumaster Last post: Tony Gondola	23	256	8 days ago
I built a free tool to generate Messier & Caldwell catalogs posters Acquisition Deep Sky Messier Objects +1 Sep 11, 2025Sylvain Villet Last post: rmatscott	7	443	7 days ago
New Script: PhotometricContinuumSubtraction -- Pixinsight Pleiades Astrophoto PixInsight Processing Narrowband +1 Oct 2, 2024Charles HagenIOTD Staff Last post: Dmitry Makolkin	49	5.4k	10 days ago
Frustration with U-C 108 tilt adapter system reliability issues William Optics Ultra-Cat 108 Tilt Jun 18, 2026Bob Anderson Last post: DavesView	1	68	7 days ago
Mosaic mode acquisition time in the Pro SeeStar S30 Pro Acquisition Mosaic Jun 18, 2026Dyan Swenning	0	28	8 days ago
Minimum latitude for the Celestron AVX Celestron Advanced VX Equatorial Mount Beginner Jun 17, 2026Arthur Iyo Last post: Tony Gondola	1	10	8 days ago
ASIAIR Autorun sequence changed behavior between filter selections ZWO ASIAIR Plus Sequencing Troubleshooting Jun 17, 2026Niels_L	0	23	9 days ago
safety monitor looks like connected to Lunatico AAG CWbut never catch the safe status The ASCOM Initiative ASCOM Equipment Observatory +3 Jun 17, 2026Frédéric Ruciak	0	5	9 days ago
OAG for a Askar 71f, 48mm or 54mm ToupTek OAG Refractors Beginner +1 Jun 16, 2026Ian Frost	0	28	9 days ago
Why do my stacked Seestar S50 M57 histograms show such a sharp lower cutoff before stretching? ZWO Seestar S50 Siril Team Siril Stacking +3 Jun 16, 2026Claudio Pedrazzi Last post: Jeff Parke	8	167	9 days ago
My first real Milky Way Request for feedback Jun 15, 2026Antton CHEVRIER Last post: Antton CHEVRIER	7	82	10 days ago

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