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Horse Head in Ha

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#1 David Rosenthal

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Posted 25 January 2013 - 04:03 PM

It has been a couple of years since I shot the Horse Head and I really wanted to see how the SXV-H9 would fair on the 125SD.

This is just under 5 hours of Ha taken over 2 nights from my backyard in North Jersey, just 20 miles outside NYC! Last night my focuser's temp probe read 9.1 degrees when I tore down. That is insane!!!

14*1200 AstroDon 5nm Ha
Borg 125SD @ f/4.6
SXV-H9,SX Wheel, SX OAG, SX ExView Guide Camera
Starlight Instruments Focus Boss II
Losmandy G11 Gemini on an AstroPhysics AWT001

>>> LARGER VERSION HERE <<<

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#2 schmeah

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Posted 25 January 2013 - 08:17 PM

I'd say it fairs quite well. Great detail on the larger version. 9 degrees? Brrrrrrrrr. So the focus boss has temp compensation? Gotta get me one of those, especially when imaging through the SCT.
Derek

#3 David Pavlich

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Posted 25 January 2013 - 10:53 PM

That's good stuff, David!

David

#4 David Rosenthal

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Posted 25 January 2013 - 10:56 PM

Thanks Derek! Yes it does have Temperature Compensation and it works real well, in both directions. This one is a joint venture between FeatherTouch and Optec. It uses FeatherTouch's standard focuser and MicroTouch stepper with Opetc's control box and software. I picked ip up at NEAF last year. I think I purchased the second one made. It really is a slick system. It links into MaximDL, through ASCOM, so I can use filter offsets to tweak focus when I switch R, G and B filters. Combine that with the temperature compensation and it is worry free.

#5 Dean J.

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Posted 25 January 2013 - 11:46 PM

Sweet! That larger version is definitely worth a look.

Great job.

#6 NorthBoundTrain

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Posted 26 January 2013 - 03:18 AM

Very nice David!

#7 Harel_Boren

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Posted 26 January 2013 - 06:10 AM

Well... it was worth the cold, that I can say. A very nice image, with great detail. It was worth it!
Cheers,
Harel

#8 broca

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Posted 26 January 2013 - 10:41 AM

No doubt, the imaged posted on you web page is quite stunning. Well done!

#9 kfir Simon

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Posted 26 January 2013 - 11:28 AM

Hi David,

Nice to see that the horsehead looks the same from NJ as from here (Israel)... :lol:
Glad to see that the cold didn't change him...

Great work - cold well spent!

Cheers,

Kfir

#10 David Rosenthal

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Posted 27 January 2013 - 10:11 PM

Thanks very much everyone!! I am real pleased with this one and I am glad you all liked it as well !!!!

#11 Bill W.

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Posted 27 January 2013 - 10:58 PM

WOW David! The detail on the horsehead is incredible.

-Bill

#12 J.P.M

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Posted 28 January 2013 - 06:26 AM

Stunning work.






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