Search found 44 matches

by einari
13 Apr 2020, 19:17
Forum: Image processing and analysis
Topic: Follow minor planet - or comet
Replies: 7
Views: 4026

Re: Follow minor planet - or comet

I tried but it doesn' t look much better.
Is negative camera angle valid ?
by einari
13 Apr 2020, 15:12
Forum: Image processing and analysis
Topic: Follow minor planet - or comet
Replies: 7
Views: 4026

Follow minor planet - or comet

I'm assuming asteroid or comet align assumes that north is up (and east west) in images.
How about when camera is not rotated like that ?
Would it be possible to read angle from fits and then calculate the angle of asteroid/comet based on that ?
by einari
08 Feb 2020, 15:57
Forum: Image processing and analysis
Topic: Plate solving - single vs stacked
Replies: 1
Views: 1690

Plate solving - single vs stacked

I just make image of recent supernova (SN 2020ue in NGC 4636).

Started doing astrometry/photometry but first plate solving.
But it was strange that I couldn't plate solve using calibrated and stacked image - uncalibrated single image solved fine.
by einari
02 Oct 2019, 16:18
Forum: Image processing and analysis
Topic: Trichromy - large images?
Replies: 4
Views: 2815

Re: Trichromy - large images?

You were right that they were different size.
Good to know that there's going to be warning of this in the future.
by einari
01 Oct 2019, 16:57
Forum: Image processing and analysis
Topic: Trichromy - large images?
Replies: 4
Views: 2815

Re: Trichromy - large images?

I tried both 64bit and LAA version and same result.
End mosaic size is about 5000 x 5700 pixels.
by einari
30 Sep 2019, 04:34
Forum: Image processing and analysis
Topic: Trichromy - large images?
Replies: 4
Views: 2815

Trichromy - large images?

Is there a limit how big images can be fed?
I have made a 3x2 mosaic which is over 5000 pixels in size.
Now when I'm doing Trichromy and adding second channel it deletes the first.
by einari
03 Jul 2019, 11:10
Forum: Scripts
Topic: coregister with SCRIPT
Replies: 7
Views: 4642

Re: coregister with SCRIPT

If your script automatically detects new objects then I'm sure many would be interested - me included.
by einari
24 Jun 2019, 05:23
Forum: General
Topic: Is 60s good enough?
Replies: 5
Views: 6550

Re: Is 60s good enough?

There are so many variables in AP so no wonder there's 'conflicting info'. If you are going to image moderately bright targets then 60s might be enough - and you only need to stack less than 100 of them. But if you are going NB and image faint targets then you need hundreds (even thousands) of image...
by einari
19 Jun 2019, 08:55
Forum: Image processing and analysis
Topic: RGB horizontal stripes
Replies: 6
Views: 3547

Re: RGB horizontal stripes

Are you dithering ?
If not then you should.

There are ways to smooth those stripes but better to use dithering.
by einari
12 Jun 2019, 08:48
Forum: Image processing and analysis
Topic: AStroart 7 photometry & Astrometry question
Replies: 20
Views: 11437

Re: AStroart 7 photometry & Astrometry question

I can confirm it works your problem sounds strange.
Have you tried different area/image ?
by einari
07 May 2019, 17:38
Forum: General
Topic: Astroart 7 Service Pack 1
Replies: 5
Views: 5472

Re: Astroart 7 Service Pack 1

Very nice.
Some problems fixed which I have encountered .