November 2, 2017

M76 (Fall 2017)


I gathered data for this image over four nights in September and October.  M76 is found in our constellation Perseus.  Looking back, I should have taken much longer OIII subs.  I started out with 8-minute subs for narrowband, but the extended lobes of the nebula remain mostly invisible without longer exposures.  For the last Ha, I switched to 20-minute subs.

This is 31x480 in OIII, 9x480 in Ha, and 14x1200 in Ha.  Camera was the SXVF-H9.   Telescope was the CFF 290 Classical Cassegrain at eff. f/8.1.

2 comments:

RoryG said...

Gorgeous! You have, again, created a new favorite!

Polaris B said...

Man thanks, Rory!