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Rigel003
09-03-2007, 08:06 AM
My first Jupiter image for the season. Pretty steady seeing this morning.

C11 and 840k Toucam
iceman
09-03-2007, 08:16 AM
WOW! That's a fantastic image, Graeme! Could you increase the image scale any more next time? What barlow did you use?

Beautiful Jupiter, naturally processed. Well done.
sheeny
09-03-2007, 08:17 AM
Good one, Graeme!

Al.
Rigel003
09-03-2007, 08:27 AM
Mike,
it's a 2.5x Powermate which gives me f25
Ric
09-03-2007, 08:33 AM
Top image Graeme, the sky looked very good this morning as I was going to work and Jupiter was shining brightly as well.

Cheers
John K
09-03-2007, 09:32 AM
Sweet image there! well done!
Hopefully good Adelaide weather comming east to Melbourne as well (got clouded out this morning)
matt
09-03-2007, 07:14 PM
Nice one Graeme:thumbsup:

Plenty of detail there and colour looks right.
RB
09-03-2007, 07:26 PM
Wow Graeme!
Awesome shot, well done.

:thumbsup:
Rigel003
09-03-2007, 09:25 PM
It just occured to me that this is a smaller scale than my 2006 photos. For the first time I tried putting the Powermate and webcam directly on the visual back, not using the 2" star diagonal. Would this reduce the image scale?
beren
09-03-2007, 09:34 PM
:) fantastic image
Rigel003
10-03-2007, 12:07 AM
Processed a couple more from the same session to show a rotation sequence. About 20 minutes between 1st and last images.
iceman
10-03-2007, 04:34 AM
Excellent!
And yes,I believe the diagonal will make a difference. Putit back :)
Dennis
10-03-2007, 08:39 AM
Hi Graeme

Those are wonderful images of Jupiter - terrific detail all round.

I think that SCT’s are F10 systems only when used in a certain configuration as designed by the manufacturer.

Because they focus by moving the primary mirror, I think that when you make the light path “longer” by using accessories that require you to bring the image to focus further outside the OTA, as when using a star diagonal, the F Ratio increases because the amplification factor of the system has increased due to the secondary/primary separation increasing.

Cheers

Dennis
matt
10-03-2007, 11:39 AM
The diagonal will definitely give you more image scale.

I discovered this, to my shock and delight, last Jupiter season:thumbsup:
Rigel003
10-03-2007, 02:51 PM
Thanks for the comments everyone. I'll go back to using the diagonal and maybe try a 3x barlow for bigger image scale.

Was all set to go at 5.00am this morning but there had been an unexpected accident involving the 11" Nexstar I'd left out all night to cool and the automatic lawn sprinklers. Still drying out now - hope the electronics aren't fried. I am a little anxious.