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Slawomir
20-09-2014, 04:43 PM
The effect of my attempt to refine about 3.5 hours of data (12nm H, O and S filters) with PI. (HEQ5 and 100mm doublet)
Geoff45
21-09-2014, 08:50 PM
A lot of fine detail there. Looks really good.
Geoff
SimmoW
22-09-2014, 11:01 AM
Agree, really nice image
pmrid
22-09-2014, 11:30 AM
It makes the point very well that with narrowband imaging, a doublet can do the job pretty darned well.
Nice work.
Peter
Slawomir
22-09-2014, 03:46 PM
Good things about a doublet are that it is definitely cheaper and possibly lighter than a same-sized triplet, but using an OAG with a doublet is a real pain - adjusting focus after changing a filter de-focuses guide camera a fair bit. That is why I went back to using a guide scope, which in turns brings problems with a flex...

Thank you for your kind feedback :-)
Ross G
23-09-2014, 08:59 AM
Great detail.

A very nice looking photo.

Ross.