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Caldwell 1
Caldwell 1 by Mark Vickers
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Jeffery Richards
Remember when???
AcquisitionArtifactsSatellite
Jun 11, 2026Jeffery Richards
Last post: Tony Gondola
Tony Gondola
Tom Marsala
Francesco Meschia
Gilmour Dickson
Dave Erickson
45805
10 hours ago
Eric Gagné
Is the so called “60%” rule a thing for strainwave mounts ?
Harmonic MountBuying Advice
May 23, 2026Eric Gagné
Last post: TiffsAndAstro
TiffsAndAstro
Tony Gondola
Robert Lagasse
TimW
Anthony (Tony) Johnson
31833
2 hours ago
Matteo Luongo
Diagnostic Help: Progressive Frame Drift Despite Active Autoguiding
Open PHD Guiding Project PHD2Deep SkyNebula +1
Jun 17, 2026Matteo LuongoNew contributor
Last post: Matteo Luongo
Scott Badger
TiffsAndAstro
Sam Kaplan
andrea tasselli
Maximax
32229
53 minutes ago
John Stone
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
Paul Larkin
Tony Gondola
GregsAstrobin
drunkenAstro
Steve Solon
47992
23 hours ago
darkdesertdome
Mining company threatens dark skies and remote telescope facilities in S.W. New Mexico / S.E. Arizona
Dark SiteLight PollutionRemote Astrophotography +1
Jun 7, 2026darkdesertdome
Last post: darkdesertdome
Tony Gondola
TiffsAndAstro
Kyle Cerniglia
Rob Johnson
Tom Fleming
40915
1 day ago
Sylvain Villet
I built a free tool to generate Messier & Caldwell catalogs posters
AcquisitionDeep SkyMessier Objects +1
Sep 11, 2025Sylvain Villet
Last post: rmatscott
rmatscott
Cornelis van Zuilen
Ole Skanning
Jim Miller
andrea tasselli
7410
16 hours ago
Daniel J. Givens
A comparison of BXT/NXT vs SyQon
Russell Croman Astrophotography NoiseXTerminator
Jun 15, 2026Daniel J. Givens
Last post: Tony Gondola
Tony Gondola
Scott Badger
Bill McLaughlin
SyQon Astro
10538
18 hours ago
Nathalie DB
Hello to all astronomy enthusiasts.
Off-topicDeep SkyFrançais
Jul 1, 2025Nathalie DB
Last post: Nathalie DB
Eddy Cochez
Maccawacca
561.4k
1 day ago
SkyHoinar
Is this dew?
Troubleshooting
Jun 17, 2026SkyHoinar
Last post: Scott Badger
Tony Gondola
sharkmelley
4110
39 minutes ago
Charles Hagen
New Script: PhotometricContinuumSubtraction -- Pixinsight
Pleiades Astrophoto PixInsightProcessingNarrowband +1
Oct 2, 2024Charles HagenIOTD Staff
Last post: Dmitry Makolkin
Dmitry Makolkin
Noah Tingey
Rafael Sampaio
William
Thomas Rider
495.4k
2 days ago
jujumaster
Stacked SII image shows wave pattern noise at 1200s exposure
AcquisitionDeep SkyM27 +2
Jun 17, 2026jujumasterNew contributor
Last post: Tony Gondola
Tony Gondola
Lynn K
andrea tasselli
TiffsAndAstro
23227
1 day ago
Ali Alobaidly
ToupTek is getting closer to breaking the monopoly (StellaVita 2.0))
ToupTek StellaVitaEquipment
Feb 9, 2026Ali Alobaidly
Last post: Tony Gondola
Tony Gondola
SonnyE
TiffsAndAstro
Stelios_Stergiou
ScottF
642.1k
2 days ago
Phil Creed
Deep-sky performance difference of 585MC-Air vs. 533MC-Pro?
ZWO ASI533MC ProZWO ASI585MC AIRZWO ASI585MC Pro +1
Jun 18, 2026Phil Creed
Last post: Tony Gondola
Tony Gondola
andrea tasselli
894
17 hours ago
Frédéric Ruciak
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 ASCOMTroubleshooting
Jun 17, 2026Frédéric Ruciak
Last post: Frédéric Ruciak
Jon Woodhead
Alex Nicholas
Jean-Michel Hirschi
6206
1 day ago
Tony Gondola
Differential Flexure
GuidingTroubleshooting
Jun 14, 2026Tony GondolaFrequent contributorExemplary contributor
Last post: Tony Gondola
SonnyE
Bill McLaughlin
John Hayes
Alex Nicholas
andrea tasselli
11224
1 day ago
Salvatore Iovene
Community tools and Hobby projects
Astronomy tools
Feb 14, 2026Salvatore IoveneAstroBin StaffIOTD StaffExemplary contributor
Last post: samuel krieger
samuel krieger
Jeffrey Horne
Joerg
Cassio Pieroni Trevisani (AstroBear)
MaksPower
623.2k
3 days ago
Mark Worthington
Best practice for preventing moisture damage
EquipmentTroubleshooting
Apr 29, 2026Mark Worthington
Last post: Jean Barba
Jean Barba
SonnyE
andrea tasselli
Scott Badger
Brian Puhl
7166
1 day ago
Bob Anderson
Frustration with U-C 108 tilt adapter system reliability issues
William Optics Ultra-Cat 108Tilt
Jun 18, 2026Bob Anderson
Last post: DavesView
DavesView
146
16 hours ago
Claudio Pedrazzi
Why do my stacked Seestar S50 M57 histograms show such a sharp lower cutoff before stretching?
ZWO Seestar S50Siril Team SirilStacking +3
Jun 16, 2026Claudio Pedrazzi
Last post: Jeff Parke
Jeff Parke
Jeff Reitzel
Willem Jan Drijfhout
8162
2 days ago
yash0661
Hello everyone there are some images captured by me. from my F30070M, 70mm refractor telescope using 3x barlow and 20mm eyepiece and phone camera
AcquisitionSolar SystemGalaxy +1
Jun 18, 2026yash0661New contributor
045
22 hours ago
Arun Vijay
How to install SyQon Prism & Parallax in PixInsight (and fix "no updates available")
Pleiades Astrophoto PixInsightAstronomy toolsHow-to
Jun 12, 2026Arun Vijay
Last post: Charlie Forbes
Charlie Forbes
Monte Roder
2114
2 days ago
Swee Sin Eng
Halo issues with L extreme filter on Skyrover 90SAP setup
FiltersArtifactsTroubleshooting
Jun 18, 2026Swee Sin EngNew contributor
Last post: andrea tasselli
andrea tasselli
136
1 day ago
Dionito
ASI 533MC Pro USB hub connection failures with multiple devices
ZWO ASI533MC ProEquipmentHelp Needed +1
Jun 5, 2026Dionito
Last post: Dionito
Mark Fox
Eric Dreher
Starchasm
alpheratz06
JAKarambela
37498
3 days ago
Antton CHEVRIER
My first real Milky Way
Request for feedback
Jun 15, 2026Antton CHEVRIERNew contributor
Last post: Antton CHEVRIER
Willem Jan Drijfhout
Tony Gondola
779
2 days ago
Dyan Swenning
Mosaic mode acquisition time in the Pro
SeeStar S30 Pro AcquisitionMosaic
Jun 18, 2026Dyan SwenningNew contributor
016
21 hours ago
Jerry Gerber
Mini PC, fan or fanless?
EquipmentRemote Astrophotography
Aug 31, 2025Jerry GerberPerfect post
Last post: Dale Ghent
Dale Ghent
Wayne Elley
Ed Dixon
Ejo Schrama
Al Loan
661.7k
4 days ago
Frédéric Ruciak
Inconsistency between NINA TTPA / reported PA by 10micron mount and wht PHD2 guiding assitant says
Open PHD Guiding Project PHD2Equatorial MountPolar Alignment +1
Jun 12, 2026Frédéric Ruciak
Last post: Willem Jan Drijfhout
Willem Jan Drijfhout
Dale Ghent
Alex Nicholas
Brian Puhl
Rick Krejci
9226
3 days ago
Ethan Sweet
Pixinsight process icons disappearing randomly from workspace
Pleiades Astrophoto PixInsight
Jun 10, 2026Ethan Sweet
Last post: Ethan Sweet
Michael
andrea tasselli
ArchStarGazer
Tony Gondola
786
2 days ago
Arthur Iyo
Minimum latitude for the Celestron AVX
Celestron Advanced VXEquatorial MountBeginner
Jun 17, 2026Arthur IyoNew contributor
Last post: Tony Gondola
Tony Gondola
17
1 day ago
Michael W. Dean
What quick-change adapter to get? Astro-Tech AT130EDT
EquipmentFlattenerFocuser +3
Jun 15, 2026Michael W. Dean
Last post: SonnyE
SonnyE
347
2 days ago
Steven Zuhoski
Issue with Deformed Stars
EquipmentRefractorsOptics +3
Jun 14, 2026Steven Zuhoski
Last post: andrea tasselli
andrea tasselli
Willem Jan Drijfhout
Tony Gondola
Pavel Lafata
8157
3 days ago
Niels_L
ASIAIR Autorun sequence changed behavior between filter selections
ZWO ASIAIR PlusSequencingTroubleshooting
Jun 17, 2026Niels_L
019
2 days ago
Paul Campbell
OAG Cost for C8
EquipmentReflectorsBackyard Astrophotography +1
Jun 12, 2026Paul Campbell
Last post: Jaume Benet
Jaume Benet
PaoloMoroni
Rostokko
Paul Larkin
Dave Stirling
20197
4 days ago
Paul Sanfilippo
Solar observing/imaging - interested in your experience.
Solar FilterSun
Jun 13, 2026Paul Sanfilippo
Last post: AdAstraAnimadverto
AdAstraAnimadverto
Matthew Singer
Michele Rainville
dan baldwin
Harlan Dolphy-King
8153
4 days ago
Ian Frost
OAG for a Askar 71f, 48mm or 54mm
ToupTek OAGRefractorsBeginner +1
Jun 16, 2026Ian Frost
025
2 days ago
Unified_Scale
Photos of anomalies or pareidolia(potentially) and other weird things that are interesting and need explanation.
ProcessingAdvancedChallenge +5
Jun 15, 2026Unified_ScaleNew contributor
Last post: Unified_Scale
264
3 days ago
Mike Thorpe
Bubble artifact in upper right corner with AR152 telescope
Explore Scientific AR152 Air-Spaced Doublet RefractorRefractorsProcessing +2
Jun 12, 2026Mike ThorpeNew contributor
Last post: Mike Thorpe
Tony Gondola
Lynx Coleman
Connor Siedentop
9171
4 days ago
Christian Silk
FSCT8: Fast 8 Inch Schmidt-Cassegrain Telescope
EquipmentNews
Jun 4, 2026Christian Silk
Last post: andrea tasselli
andrea tasselli
Luka Poropat
Tony Gondola
Anthony (Tony) Johnson
chvvkumar
26620
5 days ago
Frédéric Ruciak
safety monitor looks like connected to Lunatico AAG CWbut never catch the safe status
The ASCOM Initiative ASCOMEquipmentObservatory +3
Jun 17, 2026Frédéric Ruciak
05
2 days ago
Scott Stirling
Pixinsight astrometric annotation catalogs
Pleiades Astrophoto PixInsightAstrometryAdvanced +1
May 31, 2026Scott Stirling
Last post: Paul Puntin
Paul Puntin
Willem Jan Drijfhout
16257
5 days ago
Luke Pearson
ASI driver blocked?
EquipmentPlanetary CameraHelp Needed +1
May 23, 2026Luke Pearson
Last post: Don Ogaard
Don Ogaard
Rick Veregin
Tony Gondola
Walter Leonhard Schramböck
TiffsAndAstro
12257
5 days ago
Rabeea Alkuwari
Sensor FWHM readings versus actual sub FWHM values
Dark SiteRemote AstrophotographySeeing Conditions +1
Jun 7, 2026Rabeea Alkuwari
Last post: Dale Ghent
Dale Ghent
John Hayes
andrea tasselli
Craig Towell
Bill McLaughlin
18335
6 days ago
mainenebula
Tak FS-60CB imaging query
Takahashi FS-60CBAuto-Focusing
Jun 11, 2026mainenebula
Last post: Willem Jan Drijfhout
Willem Jan Drijfhout
356
5 days ago
JTSAN
OCAL 4.0 Collimator & MacBook Pro a non starter?
CollimationHelp Needed
Jun 14, 2026JTSAN
019
4 days ago
Ben Jansen
Altair 3.5nm vs Antlia ALP-T 3nm Dual Band Filters…?
EquipmentFiltersDuo-Narrowband +3
Jun 9, 2026Ben Jansen
Last post: Connor Siedentop
Connor Siedentop
Brian Carter
andrea tasselli
393
6 days ago
Michael W. Dean
TECHNICAL QUESTION FOR SOLAR PHOTOGRAPHY EXPERTS
ProcessingStretchingArtifacts +2
Jun 5, 2026Michael W. Dean
Last post: Michael W. Dean
Astronominik
dan baldwin
Tony Gondola
26352
7 days ago
Hassaan Zaheer
Cannot figure out these weird gradients
Sky-Watcher Quattro 150P
May 7, 2026Hassaan Zaheer
Last post: Hassaan Zaheer
Alejandro Moreschi
Jay Mills
John Hayes
Lorenzo Siciliano
Klaus Haaken
26566
8 days ago
Frédéric Ruciak
Lunatico Cloudwatcher AAG CW calibration at E-Eye in Spain
EquipmentObservatoryRemote Astrophotography +2
Jun 11, 2026Frédéric Ruciak
Last post: Frédéric Ruciak
Bill McLaughlin
Luka Poropat
379
6 days ago
Tony Gondola
Are we at the limit?
EquipmentAdvancedAstronomy tools
Jun 8, 2026Tony GondolaFrequent contributorExemplary contributor
Last post: Steven Fanutti
Steven Fanutti
CaptnCook
Jeff Bennett
Lucas Jacobson
Paul Campbell
451.1k
9 days ago
Oscar A. Castro-Artola
Seestar S50 Linux control via KStars EKOS INDI Alpaca
ZWO Seestar S50INDI Library EkosKDEdu KStars +4
Jun 3, 2026Oscar A. Castro-Artola
Last post: Connor Siedentop
Connor Siedentop
146
6 days ago
Showing 1-50 of 8928