Small bore challenge: Jupiter w/ 6" or less
Posted 01 December 2012 - 12:44 PM
Jupiter reaches opposition this weekend and it won't get any better than this. I would love to see what folks with smaller aperture scopes can do while we have this great opportunity. Here is The King on Friday morning, taken with my SW100ED (4") at f/36. Seeing conditions were only average/fair, but the small refractor still gave a good account of itself. Interested in giving it a go? Good luck!
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Posted 01 December 2012 - 04:28 PM
Posted 01 December 2012 - 09:04 PM
Richard - This image was taken with an Imaging Source DBK21AU618 (a one shot color camera) and a Baader UV/IR cut filter.
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Posted 02 December 2012 - 03:38 AM
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Posted 02 December 2012 - 04:33 AM
Conditions were fair to good that night.
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Posted 02 December 2012 - 11:19 AM
In order to reach focus with your refractor you may need a tube extension - I do...
Thanks Brian. How do you calculate the required extension tube length for your barlow/refractor combination? Is there a formula for doing that?
Posted 02 December 2012 - 11:42 AM
I am mortally certain there is a formula but I have no idea what it is and did not use it myself. The operational way to tell is to plug in your planet cam and keep racking the focuser in and out until you score focus or see an out-of-focus blob at maximum in or out travel. If you get the blob (most likely at maximum extension) you need a tube extender. You can get them from Orion, TV, AP, Stellarvue and elsewhere; I like the ET3 model from SV: http://www.stellarvu...m/adapters.html, you are looking for something that gives you about 2" extra travel. You will need a 1.25" adapter to receive your nosepiece, I find this centering adapter from Orion does a great job keeping everything tight and properly aligned: http://www.optcorp.c...ing adapter&... Hope this helps!
Posted 02 December 2012 - 11:45 AM
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Posted 06 December 2012 - 02:41 AM
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Posted 06 December 2012 - 02:49 AM
Posted 06 December 2012 - 02:50 AM
Nice Paul - not sure what exactly defines "small bore" but I was going to set up the 5" apo with the ASI120MC colour cam to see how that fared on Jupiter on a night when/if old Jove cooperates..!
.....Duuuhhh!!! I just thread the thread title..!!!
Posted 06 December 2012 - 02:59 AM
I've ordered DMK21AU618 before I saw your stunning pics with the new cam. I just couldn't make the old DMK31 work on the C14. I want to try a color CMOS later and see if I can get away from mono everything. Thanks.
Posted 06 December 2012 - 09:05 AM
C6SGT at f/30 (4500mm):
AT72ED at f/36 (2580mm):
The scopes share a dual saddle on my CG5 mount so getting shots thru both was fairly quick and painless.
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Posted 07 December 2012 - 08:42 AM
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Posted 07 December 2012 - 08:26 PM
My best so far but still trying.
Posted 09 December 2012 - 10:19 PM
This is from August of 2010 with my C6-N + SPC900NC:
Jupiter 8/7/10 8:20UT by zAmb0ni, on Flickr
Also, here is a link to an animation from the same night.
I'm pretty sure that I did the stacking in registax, going to see if I still have the videos on my hard drive and try stacking them in AS2! to see if there is any improvement.
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Posted 10 December 2012 - 08:46 AM
Great image you uploaded here, that 6" of you sure
Maybe I just got lucky with the result posted in my
other thread, I'll do some more avi's maybe tonight when
I get home and post an image in this thread as well!
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