Spaghetti Nebula: a total of 12h 50m, and a lesson in using the right filter

[michael.h.f.wilkinson]

I have been focusing on the Spaghetti Nebula these last nights, and grabbing loads of data with the ASI183MM-Pro and Sigma 50-100 mm F/1.8 zoom. I had attempted this tough object with the Baader H-alpha Highspeed F2 filter last year, and got 4 h 48 min of data, which gave me a decent start.

I then got another 4 h of data on March 2, this year, but was a bit disapointed with the result, and was particcularly disturbed at the nasty halo around Alnath

I checked next day, and I had used the wrong filter wheel, with the regular Baader H-alpha filter in place. I quickly corrected this, and grabbed a total of 8 h and 2 minutes in the last two nights, which gave me this:

Much better, I would say. I then stacked this result with the first 4 h 48 min stack, to get a total stack of 12 h 50 min at F/1.8

I really should add colour to this. I am thinking of using the DSLR with L-eNhance filter and the Samyang 135 mm F/2 (for which I still need to make a good rig to mount onto the ASI183MM-Pro). Whatever the result, it shows the value of the Baader Highspeed filters.