Search found 461 matches

by fabdev
15 May 2023, 15:11
Forum: General
Topic: Astroart 8 SP4
Replies: 1
Views: 1303

Re: Astroart 8 SP4

further information from the updated documentation: Optical distortions with user defined polynomial order ... use the option "Distortions between images" only if the images cannot be aligned well by normal rotations. This can happen with large fields when the images were taken on different nights o...
by fabdev
15 May 2023, 14:53
Forum: General
Topic: Astroart 8 SP4
Replies: 1
Views: 1303

Astroart 8 SP4

Hello, a new minor version of Astroart 8 is available (actually it's a pretty big update): Version 8.0 SP4 - May 14, 2023 ------------------------------ * New feature. Optical distortions with user defined polynomial order. * New feature. Align RGB planes with optical distortions. * New feature. Cor...
by fabdev
02 May 2023, 14:37
Forum: Instrumentation
Topic: Updated plugin for Starlight-Xpress Trius and SXV-H
Replies: 0
Views: 2554

Updated plugin for Starlight-Xpress Trius and SXV-H

Hello, a new version (3.60) of the Astroart plugin for Starlight-Xpress cameras (Trius and older SXV-H series) is available at Astroart web site: https://www.msb-astroart.com

About these cameras, see: https://www.sxccd.com/cameras/
by fabdev
28 Apr 2023, 01:37
Forum: Images, research, events
Topic: PNV J17224490-4137160 - Nova in Scorpius
Replies: 1
Views: 1558

Re: PNV J17224490-4137160 - Nova in Scorpius

Hi Andrew, congratulations! I'm following the developments, for example:
http://www.spectro-aras.com/forum/viewt ... =36&t=3090
Fabio.
by fabdev
17 Apr 2023, 14:06
Forum: Instrumentation
Topic: Full Frame Focus Exposure Time By Filter
Replies: 19
Views: 3308

Re: Full Frame Focus Exposure Time By Filter

Hi Joe,
you may switch to SP2 / SP3 , using the SP3 Upgrade: https://www.msb-astroart.com/down_en.htm
but I think that nothing will change.

Maybe you are now using the 64 bit version? Maybe you upgraded the QHY ASCOM driver and now the device names are called: QHYCCD-Camera and QHYCCD-Guider?
by fabdev
05 Apr 2023, 02:23
Forum: Image processing and analysis
Topic: Starnet path
Replies: 2
Views: 1129

Re: Starnet path

The setting is saved into the "Temp" folder of Windows, so it's possible that if you "clean up" the PC it gets deleted too.
In a future release it will be saved into a more persistent folder.
Fabio.
by fabdev
26 Mar 2023, 11:58
Forum: Instrumentation
Topic: Full Frame Focus Exposure Time By Filter
Replies: 19
Views: 3308

Re: Full Frame Focus Exposure Time By Filter

ASCOM relay boxes are rare hardware which converts USB/serial to an autoguide cable, it's probably not the correct settings. If there is no need to control the mount for GOTOs, I confirm that the correct setting is: "Camera 2 relays" / "Same connection of GOTO" or "ASCOM guider relays" / "Same conne...
by fabdev
26 Mar 2023, 02:09
Forum: Instrumentation
Topic: Full Frame Focus Exposure Time By Filter
Replies: 19
Views: 3308

Re: Full Frame Focus Exposure Time By Filter

... Looking at the full frame focusing window in AA8 there isn’t an option to set the exposure duration by filter (I.e. 3 seconds for LRGB filters and 30 seconds for the narrow band filters ... Until now it's only possible with scripts, but that's actually an interesting feature. It will be added t...
by fabdev
21 Feb 2023, 01:06
Forum: General
Topic: RGB brightness cataloque
Replies: 1
Views: 1079

Re: RGB brightness cataloque

Hello, do you refer to the smaller catalog of 1346 stars or the bigger one with 15 millions stars ? At the moment other catalogs cannot be added to the Star Atlas, but these two catalogs could be accessed by an image processing plugin, for example to create a synthetic image, a reference to calibrat...
by fabdev
09 Feb 2023, 16:18
Forum: Image processing and analysis
Topic: Time stamp for recorded airmass
Replies: 2
Views: 1089

Re: Time stamp for recorded airmass

Hello, the airmass is calculated at mid-exposure.
Instead, DATE-OBS is always the start of exposure in the FITS standard, and mid-exposure is a calculated field, as: DATE-OBS + EXPOSURE/2.
Fabio.
by fabdev
09 Feb 2023, 16:15
Forum: Image processing and analysis
Topic: Vanderbei Deconvolution for coma and field curvature.
Replies: 3
Views: 1109

Re: Vanderbei Deconvolution for coma and field curvature.

That's interesting. Yes, that plug-in is single-threaded. It looks like most of the blurring is caused by image deformations from different wavelengths, not PSF. Maybe after having separated the image into R-G-B channel the new alignment with distortions could attenuate the problem (align R to G, th...
by fabdev
08 Feb 2023, 22:35
Forum: Image processing and analysis
Topic: DDP star bloat
Replies: 2
Views: 1109

Re: DDP star bloat

Hi, it's not easy to reply without seeing the actual image. By the way, you could use the StarNet plugin to apply DDP only on the nebula and not on the stars: 1) Duplicate the image, let's call it "B". 2) Apply your DDP on image "A". 3) Apply a DDP with low gamma and mid white point to image "B" (so...