NGC7009 Saturn neb-close up

[Bassnut]

Hi Guys

I found myself at 2am wondering what to do next, so I gave this one a poke. Not a lot of exposure time, Id like to improve on it, but its too low to start earlier right now, so Ill wait a mth or so and try again then. 2am starts are a bit taxing :P.

The pic is small, because this thing really is small, catalog says 58 arc/secs, but the central bit, by my reconing is 30 arc/secs, hence the lack of detail.

Standard Hubble pallet SII:Ha:OII, no lum channel. SII is woefull, needs hrs of 20min subs next time, hence the non-hubble like green spots at each end.

50mins, 10min subs, bin1 on each filter. AO only at 0.2hz (2 sec guide exposures)

I havent tried my new resolution multiplier filter yet, it produces 52 meg subs, might have to upgrade the PC for that.

And..........no stars, cause there just wasnt any at this FOV, so there.

[duncan]

WOW! Fred, Can't wait to see how good this one will be when you get a real good crack at it. Will keep an eye out for it in the future.
Cheers:thumbsup:

[gregbradley]

Extreme closeup! Awesome mate.

What's a resolution multiplier filter?

Greg.

[strongmanmike]

Ah it's the postie :thumbsup:

Very cool image Fred, looks like an Euglena (sort of) under a microscope, how far that is from reality huh? :eyepop:

Mike

[Bassnut]

Thanks Greg. The resolution filter is a device that increases both optical and pixel resolution by up to 10 times, with no image degridation at all.
Hard to find and very expensive. It also includes a software plug-in for DL maxim (only). The downside is, that it can produce very large image files which are hard to process.

I tried it out with a QHY5 and ED80, and I cant tell the difference between images taken with it, and images I found on the web taken with a 16803 and 17.5in RCs.

It also, unfortunately, needs a 325v power supply, which is a bit restrictive for use in the field.

[multiweb]

Haha! That is insanely close. Do you barlow to get that kind of field?

[Bassnut]

Nope, just upsampling in PS :D ;) :thumbsup: :cool::scared3:

[multiweb]

Soo... no punking around? ;)

[Bassnut]

Yes, heaps ;).

[Peter Ward]

Nice green colour.

[Bassnut]

Yep, its green, I checked elsewhere, its green alright as it should be, green is very common out there in space :whistle:.

Then again, more SII might change that :mad2:.

[telecasterguru]

Well, I love it.

Frank

[iceman]

Amazing resolution and colours. Awesome work Fred.

[Lester]

Thanks for the wonderful view Fred.

All the best.

[tonybarry]

I found this paper on pixel sub-sampling:-

http://physicsworld.com/cws/product/P000016828

Interesting. Looks like the software is a big part of the task. Also looks like you maybe get 3x res for 10 steps. Something like Drizzle.

Regards
Tony Barry

[Bassnut]

Thanks guys. Id like to do proper bigger targets, but Ive done the easy ones I have in my very limited sky view right now, waiting for more interesting stuff appearing over the next mth or so.

Very interesting link Tony, thats what I was trying to describe in another post. I dont think its the same as the random dithering we do with whole pixels steps.

"With so-called pixel sub-stepping, the recording area is moved on predefined paths with a defined frequency.This "dithering", where the travel is less than the size of a pixel"

This also sounds like it would need a very precisely controled stepping device. I wonder if it still would be cheaper than upgrading to a 16meg sensor ? ;-).

I havent tried upsampling before stacking, but PS upsizing works pretty well, especially with filters.

I really should use a powermate or barlow, but the image train setup with it and OAG AO looks like a bleeding nightmare, if even possible at all.

[Hagar]

Nice Fred, talk about up close and personal.