Quote:
Originally Posted by jsmoraes
with 36 x 15 sec = the same 9 minutes. And if your polar alignment isn't good, you need to adjust manually the position of the image to help DSS does its task. For example: after each 5 or 10 photos.
The amount of data must be your main goal. Without drift, to get the best sharp image and details..
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Thanks Jorge. Polar alignment is difficult for me as I can't see the South Celestial Pole. I use an orienteering compass with magnetic dec set, plus an inclinometer. I'm getting pretty close but not close enough. I'm often surprised by how little I need to manually adjust to get objects centred but I guess when you're talking tens/hundreds/thousands of light years a small error becomes rather*large.
I have the instructions for DARV drift aligning for about 3-4 weeks. In that time there has been only twice where the combination of being off work and having clear skies has happened once.
I will definitely try more pics with shorter exposure time.
Just one question. When you say "you need to adjust manually the position of the image to help DSS does its task", are saying I need to keep updating the telescope position during the imaging session or something with each picture afterwards?
Appreciate the help.
Thanks
Mick