NGC 253 work in progress - Page 2

marc4darkskies (Marcus) · #21 05-10-2014, 10:55 AM

Quote:

Originally Posted by Paul Haese

Nice Marcus. Your full frame image is sharper than mine, I can assure you of that. Your stars are also perfectly round too. My guiding in RA is still not quite there. An impressive image Marcus. I look forward to the colour.

Cheers Paul! This is a crop (for dramatic effect), not the full frame. I'll post the full frame as well when I'm finished with a colour version

Joshua Bunn (Joshua) · #22 05-10-2014, 12:41 PM

Stunning Marc! Looking forward to the colour version. Very impressive detail in the dust lanes there. What was the sub length?

Josh

Rac (Raymond) · #23 05-10-2014, 02:56 PM

Wow. Very very nice!

marc4darkskies (Marcus) · #24 05-10-2014, 06:13 PM

Quote:

Originally Posted by Joshua Bunn

Stunning Marc! Looking forward to the colour version. Very impressive detail in the dust lanes there. What was the sub length?

Josh

Cheers Josh! 15 min subs.

Quote:

Originally Posted by Rac

Wow. Very very nice!

Thanks Raymond!

Placidus (Mike and Trish) · #25 05-10-2014, 06:56 PM

Marcus,

The clarity and detail is utterly stunning.

Congratulations,
Mike.

gregbradley · #26 05-10-2014, 08:21 PM

That's gorgeous Marcus. I can see why you are thrilled. Great going.

Greg.

marc4darkskies (Marcus) · #27 05-10-2014, 09:17 PM

Quote:

Originally Posted by Placidus

Marcus,

The clarity and detail is utterly stunning.

Congratulations,
Mike.

Thanks very much Mike!

Quote:

Originally Posted by gregbradley

That's gorgeous Marcus. I can see why you are thrilled. Great going.

Greg.

Thanks Greg! It helps when the seeing cooperates!

marco (Marco Lorenzi) · #28 06-10-2014, 02:26 AM

Quote:

Originally Posted by marc4darkskies

Extremely happy with resolution the OS360 achieves!

And you should Marcus, exceptional details and it promises to be a cracker with the color added

Congratulations
Marco

Paul Haese · #29 06-10-2014, 10:51 AM

Quote:

Originally Posted by marc4darkskies

Cheers Josh! 15 min subs.

Mine were 20 minutes.

With regard to the guiding, I seem to recall reading you adjusted your guide rate. Though you do connect your camera through the SkyX too I think? I have found I have to over correct on the guide rate and this is now set to 1.2% rather than the default of 0.5%. My RA guiding is the problem where as the Dec just sits on the line and never wanders. Any ideas what is going on? RA wanders about 0.6" up and down the line and is producing elongated stars in RA. Irritating at best. Anyway thought you might have some ideas about how to solve this long focal length guide issue.

marc4darkskies (Marcus) · #30 06-10-2014, 04:24 PM

Quote:

Originally Posted by Paul Haese

Mine were 20 minutes.

With regard to the guiding, I seem to recall reading you adjusted your guide rate. Though you do connect your camera through the SkyX too I think? I have found I have to over correct on the guide rate and this is now set to 1.2% rather than the default of 0.5%. My RA guiding is the problem where as the Dec just sits on the line and never wanders. Any ideas what is going on? RA wanders about 0.6" up and down the line and is producing elongated stars in RA. Irritating at best. Anyway thought you might have some ideas about how to solve this long focal length guide issue.

I cheated Paul. I used an AO-L.

I did mess around with mount guide settings a while back but I recall that I reduced the guide rate for smoother results because I believed a correction was causing a very slight oscillation. I haven't bothered to follow up with mount guiding only tests lately because I have the AO-L attached. In any case I never had the symptoms you describe.

Cheers, Marcus

marc4darkskies (Marcus) · #31 06-10-2014, 04:26 PM

Quote:

Originally Posted by marco

And you should Marcus, exceptional details and it promises to be a cracker with the color added

Congratulations
Marco

Thanks a lot Marco! glad you liked it!

alpal · #32 06-10-2014, 05:22 PM

Marcus,

Quote:

Thanks Allan. I'm only at 64m here - practically sea level. Big light dome to my SE from Sydney but overhead & to the west is reasonably dark. Best FWHM for the set of subs was 1.79.

Hi Marcus,
Wow - I am surprised that you got such good seeing at almost sea level.
I can't wait to see the colour added.
Some Ha would be interesting too.
That OS360 is a real premium scope - superb results - which I suppose was expected.

cheers
Allan.

SkyViking (Rolf) · #33 06-10-2014, 08:28 PM

That's incredibly detailed, I can see why you are happy Marcus!

The colour version will be spectacular for sure. Excellent work, and very inspiring

I'm tempted to swing mine over on NGC253 some time soon just to see what a good old Newt can deliver in comparison.

astronobob (Bob) · #34 06-10-2014, 09:35 PM

Fantastic details & resolution Mark, extraordinary image

marc4darkskies (Marcus) · #35 06-10-2014, 10:07 PM

Quote:

Originally Posted by alpal

Marcus,
Hi Marcus,
Wow - I am surprised that you got such good seeing at almost sea level.
I can't wait to see the colour added.
Some Ha would be interesting too.
That OS360 is a real premium scope - superb results - which I suppose was expected.

cheers
Allan.

Thanks Allan. I get good seeing reasonably regularly here..... You can never get enough though!

Quote:

Originally Posted by SkyViking

That's incredibly detailed, I can see why you are happy Marcus!

The colour version will be spectacular for sure. Excellent work, and very inspiring

I'm tempted to swing mine over on NGC253 some time soon just to see what a good old Newt can deliver in comparison.

Thanks a lot Rolf. That old newt of yours is heck of a performer too so go for it!

Quote:

Originally Posted by astronobob

Fantastic details & resolution Mark, extraordinary image

Cheers Bob!

E_ri_k (Erik) · #36 07-10-2014, 10:40 PM

Amazing detail! Incredible. Bring on the final version, I'm sure it will be stunning!

Erik

SimmoW (SIMON) · #37 07-10-2014, 10:59 PM

Yes an incredible image, and it's only on mono!!!! Can't wait for the colour version too

Ross G · #38 08-10-2014, 09:12 AM

What an amazing photo Marcus.

So sharp.

So detailed.

Outstanding work.

Ross.

marc4darkskies (Marcus) · #39 09-10-2014, 12:04 AM

Quote:

Originally Posted by E_ri_k

Amazing detail! Incredible. Bring on the final version, I'm sure it will be stunning!

Erik

Cheers Erik! Yep, dead keen to get colour data this coming cycle!

Quote:

Originally Posted by SimmoW

Yes an incredible image, and it's only on mono!!!! Can't wait for the colour version too

Thanks Simmo!

Quote:

Originally Posted by Ross G

What an amazing photo Marcus.

So sharp.

So detailed.

Outstanding work.

Ross.

Thanks a lot Ross!

alpal · #40 10-10-2014, 07:52 AM

Marcus,

Quote:

Thanks Allan. I get good seeing reasonably regularly here.....
You can never get enough though.

Hi Marcus,
I look forward to your pics with that kind of seeing.

cheers
Allan