Sequencer AA7

Cameras, telescopes, focusers and other hardware
Dunmunro
Posts: 8
Joined: 10 Jan 2019, 01:11

Re: Sequencer AA7

Post by Dunmunro » 08 Feb 2019, 01:54

fabdev wrote:
07 Feb 2019, 19:43
The current autofocus always selects the brightest star.
Maybe the focus exposure time was too short? On some fields an exposure time of 2 seconds may be necessary to get an acceptable star.
OK, I will write you by PM when ready. (But only increasing the exposure time will solve).
Thanks. I'll check the exposure time when I get back to the observatory in 3 weeks or so.

Iver
Posts: 2
Joined: 08 Jan 2019, 04:32

Re: Sequencer AA7

Post by Iver » 09 Feb 2019, 19:42

Hi Dunmunro,
If you add something like this into your script you can select the guide star you want to use for guiding! Just download the field you want to image and draw a box around the star you want to use. Then start your script!

x = Image.GetPointX
y = Image.GetPointY
Image.Close
Camera.Start(2)
Camera.Wait
Camera.Autofocus(60,x,y)
Iver

Dunmunro
Posts: 8
Joined: 10 Jan 2019, 01:11

Re: Sequencer AA7

Post by Dunmunro » 10 Feb 2019, 02:12

Iver wrote:
09 Feb 2019, 19:42
Hi Dunmunro,
If you add something like this into your script you can select the guide star you want to use for guiding! Just download the field you want to image and draw a box around the star you want to use. Then start your script!

x = Image.GetPointX
y = Image.GetPointY
Image.Close
Camera.Start(2)
Camera.Wait
Camera.Autofocus(60,x,y)
Thanks!

Can you explain the syntax: Camera.Autofocus(60,x,y) ?

If I understand it correctly it will create an autofocuser window of 120 x 120 pixels with X, Y pixels as the window centre?

Iver
Posts: 2
Joined: 08 Jan 2019, 04:32

Re: Sequencer AA7

Post by Iver » 10 Feb 2019, 03:16

x = Image.GetPointX
y = Image.GetPointY
Image.Close
Camera.Start(2)
Camera.Wait
Camera.Autofocus(60,x,y)

Yes that's correct.
The number sets the size of the subframe used for guiding. Smaller number smaller subframe!
The X and Y are the coordinates for the subframe center!
Iver

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