Cave Nebula

[daneel]

Knew it was chilly last night, power on cooler was just 10% to get to -10 C.

Ha 48 x 10 minutes (red)

OIII 27 x 10 minutes (blue)

SII 27 x 10 minutes (green)

Celestron 80 mm f 7.5

Atik 383L+

Stacked in MaximDL (median combine)

Two histogram stretches in Pixinsight, then individual bands stretched in the curve tool

[Ganymede12]

That is a really nice image!

Would I be able to see the cave in my 200P dob?

[Gina]

Lovely - superb image

[daneel]

Hi Ant,

That is a really nice image!

Would I be able to see the cave in my 200P dob?

Apparently it's a tricky object visually. The deep sky observing thread below says you need "low magnification and something like a UHC filter":

http://stargazerslounge.com/topic/152068-magnification/page__hl__+cave%20+nebula#entry1531308

It's really dim and therefore well named; I couldn't see a thing with a 10 second exposure while aligning on the target. You usually see something with the 383L after 10 seconds, even faint galaxies, but imaging this one was an act of faith.

I guess that's why the image required about 17 hours of data. There are some juicy targets coming up in the East, so itching to try a new target.

[jam1e1]

Great pic , no wonder I couldn't see it visually - I tried with oiii but appears would need v dark skies

[Quatermass]

Oh for an Atik camera to capture those faint targets great image.

[Tom OD]

I love the cave nebula. Nice image.

Tom.