AP RHA omega Cent

[Peter Ward]

Here is a (yet another..) standard candle. The seeing wasn't great and the moon was half full...so a few small gradients happening that I didn't bother fixing.

Wasn't going to post it , but hey, it's raining.... again....


Omega Centaurus image link here
(http://www.atscope.com.au/BRO/gallery144.html)

[DavidTrap]

Flat - tick!
Sharp - tick!

Reckons she's a keeper.

Out of curiosity, how long were your subs? I see it was 5:5:5 overall, but how long were the individual subs.

And why is your eyeball hairy?

DT

[Peter Ward]

Subs?? Like from Subway? 12" as I recall.... (takes about five minutes for each step :) )

Hairy eyeball??

Noun

hairy (http://en.wiktionary.org/wiki/hairy) eyeball (http://en.wiktionary.org/wiki/eyeball) (plural hairy eyeballs (http://en.wiktionary.org/w/index.php?title=hairy_eyeballs&action=edit&redlink=1))


(slang (http://en.wiktionary.org/wiki/Appendix:Glossary#slang)) A look askance (http://en.wiktionary.org/wiki/askance) at someone; a look of disdain (http://en.wiktionary.org/wiki/disdain) or skepticism (http://en.wiktionary.org/wiki/skepticism).



I take the latter definition.... Is it in focus? Nup! Just a 'rittle bit more :)

[DavidTrap]

Have you been enjoying that single malt tonight Peter?? :P

DT

[Peter Ward]

Nup. My liver knows it's limits these days....

However on the night in question.......:question:

[alpal]

That Astro-Physics 305mm F3.8 Riccardi-Honders Astrograph
has amazing optics.
I can't belive how tight the stars are right to edge of the field.
That's a really great photo.

[cventer]

Very nice indeed Peter

Definately some gradients in there but still just sensational.

When you make a purchase like that and it all works you get such a feeling of pleasure every time you use it. Congratulations. very jealous

[RobF]

Marvellous view. Stunning really.
Don't you dare NOT post any of these pics please Peter - we all need our fix of astro-porn while the weather is #$@!

[TrevorW]

15 minutes not bad although colours a bit off IMO (touch green) maybe a wee drop to much me laddy

[troypiggo]

Daaaaaayum. Such short exposures and already so many faint fuzzier in bg. Gorgeous.

[multiweb]

Impressive. There are a couple of faint fuzzies in the field as well. :thumbsup:

[JohnG]

Looking good Peter. :thumbsup:

You even have some nice detail on that nearly edge-on galaxy, ESO 270-015.

The very slight gradiant doesn't really detract from the image in my eyes.

Cheers

[Hagar]

Very nicely resolved Peter. Huge field definitely adds prspective tothe image.
Not so sure about your choise of Scotch. A bit peatty for my taste. Islay Malts are renound for their strong taste. I prefer a bit softer malts.

[Paul Haese]

Yes, excellent example of this candle. Stars are pin sharp, probably better than any other example I have seen.

As with Trevor I see some very slight green in the image. Not too distracting though.

Wanna try around Rho Ophiuchi next. I reckon that will be a monster.

[TheDecepticon]

Top job here. :thumbsup:

Love the focusing set up you have. :lol:

[Peter Ward]

Thanks guys for your feedback.

I'm pleased to report I've replaced the green gradient with a magenta one. :)

[TrevorW]

Mucho betta Senoir

[gregbradley]

Another fabulous example of the beauty of that scope. Still a tad of green in your yellow stars throwing the colour off the true yellow but very minor.

Greg.

[Peter Ward]

Thanks Greg..... I never expected this quick-and-dirty-effort to attract so much scrutiny ! :)

I wasn't going to fuss with it much, due the background being gradient city....but have now made the yellows less green.

Suspect I'll have have to give it a far more serious re-shoot and see if I can catch some of the galactic cirrus Steve Crouch first revealed some years back :thumbsup:

[gregbradley]

Yes its a fabulous image for such a quicky. It would be an amazing feat if you could capture the cirrus from the Burbs. I think you probably can.

Greg.

[troypiggo]

Peter, can I ask about your filters? Was this shot from light polluted city? Do you use LP filters? Or do you process out the LP with background calibration etc?

[Peter Ward]

I'm located on the southern side of Sydney... light pollution is moderate to the south and tragic to the north.

LP filters are not useful with CCD's. I use a standard Baader RGB set.

CCD's behave quite differently to DSLR's as you have quite a bit more dynamic range, with significantly less noise. Hence it's not difficult to pluck usable signal from a good deal of light pollution.

[Paul Haese]

Looks great now Peter. I did not think this was a quick and dirty. Forgive the critique.

[troypiggo]

Gotchya. Thanks mate.

[Peter Ward]

No problemo Paul....I initially threw it up there without much effort... I need you blokes to keep me on my toes :thumbsup:

[Ross G]

So many stars.

So many colours.

SO SHARP.

A great photo Peter.


Ross.

[Stevec35]

Nice as usual Peter. Wish my FSQ106 images were so sharp.

Cheers

Steve

[Shark Bait]

That is an amazing image, thanks for sharing. Up till now my favourite has been 47 Tuc, but now I think I will have to reconsider.

[marc4darkskies]

Ho hum ... 15 minutes of data <yawn> ...

It's going to be clear tomorrow night and Saturday night. Let's see what 10 hours of data achieves!

Cheers, Marcus

PS: Just kidding Peter - I'm wiping the drool off my beard. A 12" APO it is! :thumbsup:

[gregbradley]

Yes that's exactly what it is. I suspect Roland tweaked this 2nd run a bit from the first run. It seems even better.

Greg.

[marco]

:eyepop: amazing Peter, this and Eta (saw it but not commented yet) are both first class. Impressive results, that OTA is a killer optics and it is in good hands :thumbsup: Please, keep them coming!

Marco

[Peter Ward]

Sorry for the tardy respinse, but net access in hotel rooms can get pretty slooowww... Happy to now be back on broadband.

Thanks for the feedback. Hope to keep them coming if the weather holds :)



They are sensitive beasties (to focus) Greg. I've finally given up on the hairy eyeball approach and ordered a Starlight digital focuser for the scope...hopefully will pull the star sizes in a tad more.:thumbsup:



Been at work for the last six days.... It was clear???!! :sad:

[stardust steve]

wow absolutley love it. So many stars i diddnt know where to look first:thumbsup: