Ngc6726/6727/6729 in Corona - Page 2

marc4darkskies (Marcus) · #21 03-06-2009, 08:57 PM

Absolutely gorgeous image Eddie - well done!!

On my target list - if these clouds ever go away.

Cheers,
Marcus

alan meehan (Alan) · #22 03-06-2009, 09:44 PM

Eddie
Such a smooth shot even the the mrs liked it .
thanks.

strongmanmike (Michael) · #23 03-06-2009, 11:02 PM

Quote:

Originally Posted by Peter Ward

Nice try Mike

But I don't think that is what CWAS is all about.

Awww com'on, who you tryin to kid?

strongmanmike (Michael) · #24 03-06-2009, 11:06 PM

Quote:

But oh, the contest...I haven't really been thinking that much about it.

You know I don't do anything with any competition in mind. It's all about astronomy and seeing what's up there !

Oh gag gag....

EddieT (Eddie) · #25 03-06-2009, 11:09 PM

Quote:

Originally Posted by marc4darkskies

Absolutely gorgeous image Eddie - well done!!

On my target list - if these clouds ever go away.

Cheers,
Marcus

Thanks Marcus! It's a great target. I had it framed with the FSQ last week, got it all just right, then the clouds rolled in and never left. They're still there! So... good luck with yours! I know what it's like.

You joining the Duckadang crew this year?

EddieT (Eddie) · #26 03-06-2009, 11:14 PM

Quote:

Originally Posted by strongmanmike

Oh gag gag....

C'mon Mike! Remember the old passion. Before the days of contests....When we used to take pictures because we loved astronomy?....

Re-live the dream ! Do yourself a favour and don't enter this year, you'll thank me later. hahaha

EddieT (Eddie) · #27 03-06-2009, 11:19 PM

Quote:

Originally Posted by alan meehan

Eddie
Such a smooth shot even the the mrs liked it .
thanks.

Thanks Alan. That's the toughest crowd right there!

Heading to Duckadang this year? Be good to catch up with you guys again. It's been a full-on year for me and astrofest will be a great unwind....I'm looking forward to it.

Alchemy (Clive) · #28 04-06-2009, 06:18 AM

delightful shot eddie, im glad youve come out of the woodwork at just this time (pre CWAS) give mike and others a bit of a scare, i hope you submit this image to the Malins, there are others here who like the rent-a -scope setup so it should be a great category to be in.

now if you could just present it on your webpage at 1920x1280

clive.

astroron (Ron) · #29 04-06-2009, 09:39 AM

Beautiful shot Eddie

Lots of detail and a pleasure to view

bluescope · #30 04-06-2009, 12:49 PM

Very nice detail in the dark areas of nebulosity and the transitions are very smooth. The streams of blue around the stars are great too !

AlexN · #31 04-06-2009, 03:54 PM

Look forward to meeting you at Astrofest Eddie.

multiweb (Marc) · #32 04-06-2009, 06:22 PM

Wow. This is really nice!

Colors and contrast are great. So much stuff around to look at. Top work.

gregbradley · #33 04-06-2009, 06:52 PM

Oh my, that is gorgeous.

Was there any problem with ghost images from the U9000?

Greg.

EddieT (Eddie) · #34 04-06-2009, 07:28 PM

Quote:

Originally Posted by Alchemy

delightful shot eddie, im glad youve come out of the woodwork at just this time (pre CWAS) give mike and others a bit of a scare, i hope you submit this image to the Malins, there are others here who like the rent-a -scope setup so it should be a great category to be in.

now if you could just present it on your webpage at 1920x1280

clive.

Many thanks Clive! I've got a few to submit this year, after submitting one for each of the last two years. I have a full long weekend of processing and printing ahead of me. It's going to be long and arduous!

As for 1920x1280...Well that's difficult dimensions for a square sensor...It would require a strategic crop of about 1/3 of the image in one dimension....With the ever-present desire for largest possible chip size and field coverage, I'd find it difficult to delete so much good image real estate!

How about some black borders instead

EddieT (Eddie) · #35 04-06-2009, 07:37 PM

Quote:

Originally Posted by gregbradley

Oh my, that is gorgeous.

Was there any problem with ghost images from the U9000?

Greg.

Hi Greg,

That's a good question...I wasn't aware of any issues with ghosting and the U9000 and I noticed nothing during processing. But there were some odd artifacts in the first hour or so of imaging on the first night. It looked like out-of-focus star reflections and existed in every image regardless of filter. They formed what looked like an asterism, however I could see no star pattern in the image that matched it. They disappeared after an hour and weren't there at all on the following night. It could have been dew spots that formed early and dissipated later, I'm not sure...But they were easily removed when combined with clean images...

EddieT (Eddie) · #36 04-06-2009, 07:38 PM

Thanks Ron, Steve, Alex and Marc!

Jen · #37 04-06-2009, 10:39 PM

very beautiful pic Eddie nice work i love this area lots to look at I have a copy of one of Martin Pughs pics here waiting to be put in a frame

EddieT (Eddie) · #38 04-06-2009, 10:50 PM

Quote:

Originally Posted by Jen

very beautiful pic Eddie nice work i love this area lots to look at I have a copy of one of Martin Pughs pics here waiting to be put in a frame

Thanks Jen. Martin's picture truly is a great one of the wider nebula! Should look great in a frame!

telemarker (Keith) · #39 05-06-2009, 08:17 PM

That is one hell of an image.

Beautifully processed as well.

Cheers

gregbradley · #40 06-06-2009, 07:23 AM

Quote:

Originally Posted by EddieT

Hi Greg,

That's a good question...I wasn't aware of any issues with ghosting and the U9000 and I noticed nothing during processing. But there were some odd artifacts in the first hour or so of imaging on the first night. It looked like out-of-focus star reflections and existed in every image regardless of filter. They formed what looked like an asterism, however I could see no star pattern in the image that matched it. They disappeared after an hour and weren't there at all on the following night. It could have been dew spots that formed early and dissipated later, I'm not sure...But they were easily removed when combined with clean images...

Hi Eddie,

RBI (residual bulk image or ghost images) are an issue with the U9000 camera and any 09000 chiped camera. The 09000 chip seems more prone to it than others. I have read several complaints about it.
Apogee instituted an RBI fix which is an LED that flushes the chip
(saturates it then removes it) before your exposure. The ocst of this is a slight increase in noise. The camera has to be sent to Apogee for this to be fitted. New they come with it. FLI have had this feature for quite some time and pioneered it.

If you took a shot of the moon and then tried to take darks or continue imaging it would be very noticeable.

The pattern you mention could be RBI but it could be cosmic rays or even radiation from the CCD window radioactive breakdown (FLI camera, not sure about Apogee). These new chips are very sensitive and they often have squiggly little white spots in the darks that appear to be a bit random. They average out though when making your master dark.

I hope the new STX has this feature as a 09000 chipped camera without that feature would be somewhat of a liability judging by the complaints I have read.

I haven't seen any sign of it with the 16803 chip which whilst a tad less sensitive than the 09000 seems to be the enduring popular choice.

Greg.