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Old 22-01-2021, 04:00 PM
Startrek (Martin)
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Location: Sydney
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NGC 2244 Rosette Nebula South Coast

Captured the Rosette last night on the South Coast
A beautiful night with the moon setting at around 11.30pm
No mozzies which was unusual as the night was fairly still
Scope 8Ē f5 GSO newt
EQ6-R mount
Camera ZWOASI2600MC set at Highest Dynamic Range ( Gain 0 )
Cooled to -12C
ZWO Duoband filter
Goto and Navigation EQMOD and Ascom Stellarium
Frame focus and capture APT
PHD2 guiding ( Dec 0.50 to 0.60 and Ra 0.70 to 0.80 ) about the lowest error with this mount and payload to date
32 x 5 minute dithered guided subs
20 x darks
No flats
Stacked in DSS
Processed in Startools V1.6

LRGB version
Synthetic Luminance version
Iíll process some Narrowband versions later

Comments most welcome
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Old 23-01-2021, 06:45 AM
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PKay (Peter)
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Great result M.

Good to see the stars again!

Have a look at RCW32 (Gum Tree) , Ha emission neb in Vela.

See below in deep space M&T have done a mono version and also my first SHO of the Rosette.
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Old 23-01-2021, 09:11 AM
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RyanJones is offline
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Location: Melbourne,Australia
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Nice subtle Rosette Martin.

I’m surprised you got the whole thing in at 1000mm f/l. My 8” f/4 came out with a very similar field of view.

Edit: I just looked at the field of view comparison with sky safari and the extra 200mm makes nowhere near the difference I had expected. Even more reason I shouldn’t have bought myself into the headaches of the F/4

Last edited by RyanJones; 23-01-2021 at 09:30 AM.
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Old 23-01-2021, 10:00 AM
Startrek (Martin)
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I had a look at your Rosette, itís superb, plenty of depth
Iíll process some NB with my Rosette data but Iíd need double the amount of data since Iím using a OSC to get anywhere near that amount of depth in the image
PS I havenít imaged down here since late October last year ( busy up in Sydney)
Nice to see some dark skies again

Thanks too
Yeh I just squeezed most of it in the frame
My 6Ē f6 newt in Sydney frames it better though
When I first started AP I was advised by a guy whoís been in the hobby for 40+ years , donít buy an f4 imaging newt , it will frustrate you to no end
So I went f5 and took his advice and Iím glad I did. The 8Ē f5 newt is an superb and versatile scope ( DSO and Planetary) easy to collimate ( I hardly check it as it stays collimated ) east to focus and plenty of punch
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