Search found 461 matches

by fabdev
22 Jun 2020, 01:42
Forum: General
Topic: gsc1.1
Replies: 4
Views: 2335

Re: gsc1.1

Hello, unless you need to send precise astrometric measures, there's not need to use other catalogues. By the way the UCAC4 contains more stars and it's more precise:
viewtopic.php?f=2&t=134
by fabdev
19 Jun 2020, 11:14
Forum: General
Topic: gsc1.1
Replies: 4
Views: 2335

Re: gsc1.1

Hello, nothing has changed from AA6 to AA7 about the GSC: I suggest to check the Options of the star atlas, "Catalog 1" folder, verify that it's the same in AA6 and AA7. If you have AA6 and AA7 in the same PC, open them side by side to compare the star atlas options.
Greetings, Fabio.
by fabdev
18 Jun 2020, 20:32
Forum: General
Topic: Focus a spectrum
Replies: 2
Views: 1856

Re: Focus a spectrum

Hi, yes, that procedure is exact. The function is intended for reference lamps which give bright emission lines. The emission line must be vertical. The numbers are not significative, simply the higher the better. It was suggested some time ago by Ken from: http://astronomicalspectroscopy.com/ Clear...
by fabdev
10 Jun 2020, 22:17
Forum: Image processing and analysis
Topic: Precision loss during stacking when input is in integer FITS format
Replies: 2
Views: 1944

Re: Precision loss during stacking when input is in integer FITS format

Hello, here is some info: In Preprocessing all the steps are performed in floating point, the roundation to integer is performed only at the end, to keep the same format of the initial images. This could be used to obtain the desired result, just open the first image of the sequence, convert it to f...
by fabdev
08 Jun 2020, 13:43
Forum: General
Topic: Astroart 7.0 SP4
Replies: 9
Views: 5411

Re: Astroart 7.0 SP4

Astroart 7 SP4 contains a new full-frame autoguide, with the additional features: Usage of all stars. If several "good" stars are present in the field, then those stars are used to autoguide, just like when stacking a sequence of images. Automatic exposure time. If the star is too faint, then the ex...
by fabdev
08 Jun 2020, 13:30
Forum: General
Topic: Astroart 7.0 SP4
Replies: 9
Views: 5411

Astroart 7.0 SP4

Hello, a new minor version of Astroart is available: Version 7.0 SP4 - June 8, 2020 ----------------------------- * New feature. Full-frame autoguide on multiple stars. * New feature. Syncronization between two sessions for sequences. * New feature. Focusing with a spectrum reference line. * New fea...
by fabdev
01 Jun 2020, 14:32
Forum: Instrumentation
Topic: EOS 1000d remote shotstring could not find.
Replies: 1
Views: 1548

Re: EOS 1000d remote shotstring could not find.

Hello,
I suggest to don't use the older Canon plugin which requires Canon Shooting, instead use the native plugin included in the AA7 installation. Remember to select the option "Digic III old camera". Canon Shooting must not be running.
by fabdev
18 May 2020, 15:00
Forum: Instrumentation
Topic: Updated Nikon plugin - D850
Replies: 0
Views: 2439

Updated Nikon plugin - D850

Hello, an updated plugin for Nikon cameras is available at the Astroart web site:
http://www.msb-astroart.com/

The camera D850 is now supported.

The plugin also contains initial support for the new mirrorless (Z6, Z7, Z50) but they are not tested yet.
Clear skies,
Fabio.
by fabdev
15 May 2020, 16:45
Forum: Image processing and analysis
Topic: Stars coloring
Replies: 3
Views: 2691

Re: Stars coloring

Maybe the fastest way is the Brush tool of the Mask Window, using "Add" mode.

So, just do a single click on every star of the same color, then you may color-correct all stars with a single processing. Does this helps?
by fabdev
05 May 2020, 01:22
Forum: Scripts
Topic: saving directly keyed instructions as short scripts
Replies: 1
Views: 2013

Re: saving directly keyed instructions as short scripts

Hello, I don't understand well the question, do you mean a Macro ? There's the commands "Define Macro" and "Apply Macro", then you can launch them with the "1" "2" "3" "4" buttons. inside a script you could use: Image.Macro(n) to launch a macro. or Image.Formula() Or maybe you meant that from the Se...
by fabdev
01 May 2020, 13:15
Forum: General
Topic: bias fits vs data fits frames with cmos camera
Replies: 2
Views: 2362

Re: bias fits vs data fits frames with cmos camera

Hello, are you sure about the 8000? Usually when there's a signed/unsigned problem in supporting FITS the background is wrongly read as 32000. By the way: unsigned data does not exist in the FITS standard, if an image has a range 0..65535 (like your light images) then the ADUs must be shifted into t...
by fabdev
29 Apr 2020, 21:55
Forum: General
Topic: Slew to star of given magnitude
Replies: 3
Views: 2475

Re: Slew to star of given magnitude

OK.
Using the fullframe autofocus there's no need to search for a bright star, just autofocus on the same field of the subject. The combined measure of all stars of the field can actually be better and safer than a single measure on a brighter star.