Search found 8 matches

by bill
18 Jun 2024, 23:56
Forum: Image processing and analysis
Topic: Sub region for histogram
Replies: 3
Views: 930

Re: Sub region for histogram

Hi John,

You could make a duplicate image, F2
Then select a rectangle of the region of interest freehand or CTRL+R and select using the dialog box, and choose Crop from the image menu.
With the cropped image, select histogram to show the data.

Regards,
Bill
by bill
16 Sep 2023, 23:18
Forum: General
Topic: Plate solving - confused about catalogs
Replies: 6
Views: 3855

Re: Plate solving - confused about catalogs

Hi Patrick, The main data directory is u4b and is required. For reference, below is a snippet from the ucac4doc.txt file; access = example access code (Fortran and C), and sample output html = snapshot of web pages of UCAC project, history, pictures papers = some published papers relevant to UCAC, p...
by bill
13 May 2023, 13:21
Forum: Image processing and analysis
Topic: Stacking Report
Replies: 2
Views: 2184

Re: Stacking Report

Hi Morten,

I found You need to select and drag (highlight) the text within the report window first then either right click select copy or perform a CTRL+A for it to work.

Bill
by bill
01 Feb 2023, 21:49
Forum: General
Topic: AllCometEls.txt vs CometEls.txt
Replies: 2
Views: 2030

Re: AllCometEls.txt vs CometEls.txt

If you still want to use the smaller truncated data file CometsEls.txt (971 entries) it's available here; https://www.minorplanetcenter.net/iau/M ... metEls.txt

The AllCometsEls.txt data file currently has 4,576 entries.

Bill
by bill
30 Jan 2023, 18:15
Forum: Image processing and analysis
Topic: apply a filter to many images automatically
Replies: 2
Views: 2059

Re: apply a filter to many images automatically

Hi Astrobob0 Define a macro using the DDP values you want (double click DDP to bring up the dialog) and save the Macro. Then use the command Apply Macro, selecting the files you want to apply the DDP filter to and choosing the macro you previously defined. Make sure you select Save Images check box ...
by bill
06 May 2022, 00:27
Forum: General
Topic: Plate solving - confused about catalogs
Replies: 6
Views: 3855

Re: Plate solving - confused about catalogs

Hi Jack, I find that the new catalog (GaiaComp) that is supplied with AA8 works well for plate solving and I personally have not used UCAC4 since this new catalog was released. Extract the contents of the .ZIP file to its own directory and use the star atlas options to point to this location. Here i...
by bill
03 May 2022, 13:50
Forum: Image processing and analysis
Topic: Preprocessing - Error images - auto skip?
Replies: 4
Views: 1732

Re: Preprocessing - Error images - auto skip?

Hi Jack,
On the options page in preprocessing there is a Reject Bad Images section.
Maybe try the option of selecting and setting the Sky Background value high enough to reject the cloudy images?

Just a thought...

Bill
by bill
20 Jul 2020, 01:34
Forum: General
Topic: ucac 4
Replies: 3
Views: 3090

Re: ucac 4

Hi cjacobson, You can use an ftp client to access and download the UCAC4 catalog here: ftp://cdsarc.u-strasbg.fr/cats/I/322A/UCAC4/ Take note that there is no one single data file to download but many in separate directories. Total data to download will be about 8.4GB I don't have the info. for the ...