ASTRO: Crab season is definitely on....

Hot off the 18" cass after the "tuneup": preliminary data, managed to get
one hour each of oxygen and sulfur to add to last night's Halpha

the seeing wasn't quite as good but not terrible

so far I am at three hours total, binned 2x2 with the CM10 and the Baader
Planetarium [SII]/Ha/[OIII] filters on the 18" classical cassegrain used at
f/7.1

Richard Crisp wrote:
Hot off the 18" cass after the "tuneup": preliminary data, managed to get
one hour each of oxygen and sulfur to add to last night's Halpha

the seeing wasn't quite as good but not terrible

so far I am at three hours total, binned 2x2 with the CM10 and the Baader
Planetarium [SII]/Ha/[OIII] filters on the 18" classical cassegrain used at
f/7.1


Interesting. I see a blue jet at the "top" a bit right of center. That
came out very blue so must be mostly OIII if you're using your normal
color assignment. It came out super blue on my RGB shot as well. Just
about the same as yours.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Nice one Richard! good structure visible

reg
Dirk van den Herik


"Richard Crisp" wrote in message
...
Hot off the 18" cass after the "tuneup": preliminary data, managed to get
one hour each of oxygen and sulfur to add to last night's Halpha

the seeing wasn't quite as good but not terrible

so far I am at three hours total, binned 2x2 with the CM10 and the Baader
Planetarium [SII]/Ha/[OIII] filters on the 18" classical cassegrain used
at f/7.1