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IC 4628 Prawn Nebula Ha


prejto

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I've been off the forum for quite a while mostly due to setting up my TEC180 at a remote site in Yass, NSW, Australia*....and then by seemingly endless technical issues. This will be my final photo using my Moravian G2-8300 CCD and ONAG-XT. I used Optec FocusLock for all 12.7 hours of 10 min subs through an Astronomik 12 mm Ha filter. Processed entirely in CCDStack and Photoshop.

I'm now installing a Trius SX-46!

Thanks for viewing. Full size is here: https://www.astrobin.com/full/347212/0/?real=&mod=

Peter

 

*Heaven's Gate Observatory. Host: Martin Pugh - https://www.martinpughastrophotography.space/remote-imaging-and-telescope-hosting

Mean IC4628-ver4-2600.jpg

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Thank you Mike and Steve!

This certainly shows what is possible with good data. I only used subs below 2.3 FWHM...many were below 2. FocusLock also made it rather easy as I never had to stop to focus. I think I will miss using the ONAG but it isn't possible with the SX-46 and huge 9 slot FW. I am trying out an Optec Lacerta in the guide camera which produces an astigmatic guide image. In theory this should work as well as an ONAG for auto focusing but so far I'm having pretty ordinary results. This may be due to issues with my particular set of Astronomik RBG filters which are not nearly as par-focal as the previous smaller e31mm set. If I have to give up on FocusLock I will be sad!

Peter

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