Search found 461 matches

by fabdev
30 Nov 2019, 12:36
Forum: General
Topic: Astroart 7.0 SP2
Replies: 6
Views: 4242

Re: Astroart 7.0 SP2

Great, I assume that this is the first exposure of the night (?) If not, for autofocusing during the night, the Step must be lower, because the defocus must be much lower. I'd say maximum 50-100% of star size, for example, if the good focus for your system is stars of 4 pixels then the Step must be ...
by fabdev
30 Nov 2019, 12:26
Forum: Image processing and analysis
Topic: Applying dark results in dark image
Replies: 7
Views: 3755

Re: Applying dark results in dark image

Hi, master darks cannot be done with "Sum" methods, it's required to use the "Average" methods, otherwise they will have a diffent scale compared to light images.
With that dark frame you can solve dividing the image by 50 then saving it.
by fabdev
26 Nov 2019, 18:01
Forum: Instrumentation
Topic: Focusers and Rotators in SP2
Replies: 0
Views: 2733

Focusers and Rotators in SP2

Hello everybody, Astroart 7.0 SP2 has several new features for these devices. The focuser temperature can be used as ambient temperature and written in the FITS Header: AmbTemp.png During autofocus the results are drawn as graphs in realtime, both in the subframe and in the fullframe autofocus: AmbT...
by fabdev
26 Nov 2019, 17:21
Forum: General
Topic: Astroart 7.0 SP2
Replies: 6
Views: 4242

Astroart 7.0 SP2

Hello, a new minor version of Astroart is available: 7.0 Service Pack 2 Version 7.0 SP2 - November 26, 2019 ------------------------------------ * New feature. Control of ASCOM rotators. * New feature. Graphs during autofocus. * New feature. Full-frame autofocus. * New feature. Focuser temperature c...
by fabdev
17 Nov 2019, 16:32
Forum: Image processing and analysis
Topic: AStroart 7 photometry & Astrometry question
Replies: 20
Views: 10925

Re: Astroart 7 photometry & Astrometry question

Hi, verify that in the u4b folder there are 900 files, check the file size of some of them to verify that it was downloaded correctly.
Here is the list:
u4b-files.txt
(20.23 KiB)
by fabdev
02 Nov 2019, 22:08
Forum: Image processing and analysis
Topic: Save "Points" used for gradient removal
Replies: 2
Views: 1797

Re: Save "Points" used for gradient removal

Hi, on the other image, just SHIFT+Click to copy and paste the points.

SHIFT+Click can also be used to recover deleted points on the same image. Other functions are described in the Help, paragraph: "Selected point".
by fabdev
31 Oct 2019, 14:37
Forum: Image processing and analysis
Topic: Preprossing error
Replies: 4
Views: 2548

Re: Preprocessing error

Yes, two separated stars, for example near the corners, but not too close to the borders. By the way "two stars" is useful only if the image have rotation too, maybe "one star" is sufficient for those images. Try a comparison of the result. A bit of saturation in the center of the star is not a prob...
by fabdev
30 Oct 2019, 16:30
Forum: Image processing and analysis
Topic: Preprossing error
Replies: 4
Views: 2548

Re: Preprocessing error

Hi, the problem is big saturated stars, for the moment the only way to solve is to use the align method "One star" (or "Two stars" if you want to correct rotation). Procedure: 1) Before launching the preoprocessing, open the first image, select a star (ideal is a medium bright star, isolated, eg. wi...
by fabdev
29 Oct 2019, 14:49
Forum: Image processing and analysis
Topic: creating Hubble palette
Replies: 6
Views: 3453

Re: creating Hubble palette

Also, if you need to create the frame which is 70% HA and 30% OIII , it's possible to use the "Merge" Window or the "Average" Window, after having aligned the images with the command "Align" or "Align All".
by fabdev
28 Oct 2019, 13:33
Forum: General
Topic: How to specify FIT format?
Replies: 2
Views: 2024

Re: How to specify FIT format?

Hi, before saving, menu Edit / Data format / Floating point.

In the status bar of the image the range "R = ..." will be expressed as "RF = ..."
by fabdev
27 Oct 2019, 13:02
Forum: Scripts
Topic: Scripting functions for stacking?
Replies: 2
Views: 2077

Re: Scripting functions for stacking?

Hi there's an experimental command called "Preprocessing(text)" which accepts a text which contains the files to be stacked. Here is an example of the format of the text: #PREPROCESSING Dark=D:\temp\Drk01.fit Dark=D:\temp\Drk02.fit Image=D:\temp\IC1805-R1.fit Image=D:\temp\IC1805-R2.fit Image=D:\tem...
by fabdev
21 Oct 2019, 16:37
Forum: General
Topic: GSD Data - No SAO labels will DIsplay missing Stars
Replies: 1
Views: 1938

Re: GSC Data - No SAO labels will DIsplay missing Stars

Hello, the GSC catalog is on the Astroart 3 CDROM, in the folder "GSCData", just copy it to a folder of the hard disk. In the past, the USNO A catalog must be requested from the USNO headquarters. Here it seems that there's a FTP folder to download it: http://tdc-www.harvard.edu/catalogs/ua2.html . ...