This year M3

[starbob707]

Well I got a great deal on a SV 102mm Doublet  so I been trying it out. It came with a nice FT focuser. Has very nice optics as most SV do.  About the only thing it does not do well is very bright stars' but most doublets  have a hard time with this imaging wise. Visually it's fine. My guiding has not been working do to some cable issues.  So this is just 27 x 60"  with a Mod Nikon d5300.  Not my best m3 but not bad.  Thanks for looking. Bob

 

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[vlaiv]

Is that SV Access F/7?

I can spot only a few stars with somewhat pronounced halos due to CA.

As with any faster doublet, I suspect better results (not that this image is bad - it's quite nice in fact) could be had by use of LRGB technique. Maybe somewhat narrower L filter like astronomik L3.

[starbob707]

No its the older version. Still f7'  I used a AT 0.8 FR so its at fl 5.6 . Thanks