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Old 06-04-2008, 05:14 PM
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Omaroo (Chris Malikoff)
Let there be night...

Omaroo is offline
 
Join Date: Aug 2006
Location: Hobart, TAS
Posts: 7,639
At last - proper alignment!

At last I've managed to:

a) get the time

b) avoid the clouds and rain

c) had skies good enough to bother with

d) get proper polar alignment on my little Tak SkyPatrol-II

I used StarTarg and a webcam to drift align, and managed to take single images with the clock drive keeping stars round for up to 8 minutes. Not bad. No guiding. RA motor only. This mount has been hard to align mainly because the 355mm focal length of the FS60-C scope makes it a long-winded task if you use a 12mm illum. reticle. Painful. Webcamming it made all the difference

Anyway - here are my first attempts with it and the even littler FS60-C. The camera is a Nikon D40 that desperately needs to have the IR filter ripped out - happening soon. Typically these are 4 minute single-frame images with a dark subtracted. ISO800-1600.

Now that I have the polar alignment kinda sorted with this mount, and its really short focal length, (355mm) I'll take multiple images and stack next time around.

1) Eta Carinae

2) Triffid & Lagoon

3) Omega Centaurus

4) a 490-second exposure (8 minutes) unguided and unprocessed - I just let the RA motor run to see what happened. Pretty yukky - but should process-up OK.
Attached Thumbnails
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Click for full-size image (DSC_6665_800.jpg)
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Click for full-size image (DSC_6682_800a.jpg)
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Click for full-size image (DSC_6681_8minute.jpg)
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Last edited by Omaroo; 06-04-2008 at 06:33 PM.
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