MtnGoat
Carpal Tunnel
   
Reged: 02/18/07
Loc: Columbia Gorge, WA
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Round 3: ETX60 and DSI
#2280079 - 03/24/08 11:31 PM
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Well, it's reasonably clear and there is no moon for three hours. I'm headed out for round three in an ongoing series of crimes against optics and the heavens. My name is MtnGoat,and I'm a repeat offender.
I think I'll start off with a go at the one everyone has to bag, M42, before it drops completely into the murk near where the only clouds are hanging out. Then, galaxy time..and maybe a glob or two. I'd better put fresh batteries in the danged thing I suppose. Wish me luck!
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LLD
Lucky so far
   
Reged: 11/14/05
Loc: Ma..
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280205 - 03/25/08 12:31 AM
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I wish you luck MtnGoat! and hope to see some pic's when you have a chance!
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MtnGoat
Carpal Tunnel
   
Reged: 02/18/07
Loc: Columbia Gorge, WA
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Re: Round 3: ETX60 and DSI
[Re: LLD]
#2280380 - 03/25/08 02:52 AM Attachment (60 downloads)
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I'm not quite sure what I was aimed at, but it looks pretty good!
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justabob
Carpal Tunnel
Reged: 05/05/07
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280392 - 03/25/08 03:11 AM
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Looks like some sort of edge on galaxy, What constellation was it?
Might try to grab the horsey before it's to late.

ETX90-dsi pro-vixen sphinx mount.
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nytecam
Postmaster
Reged: 08/20/05
Loc: London UK
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280422 - 03/25/08 04:29 AM
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Your imaging improves with leaps and bounds - well done but it would be nice to know what you were pointing at It's amazing to think what these tiny scopes can record - recently a 25" Dob used on this forum to describe what I'd shot with 70mm which is x80 smaller
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seeker372011
scholastic sledgehammer
Reged: 03/05/04
Loc: Sydney , Australia
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Re: Round 3: ETX60 and DSI
[Re: justabob]
#2280423 - 03/25/08 04:29 AM
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could that galaxy be M 104?image scale looks ver large though unless you did some resizing
thats a great shot of the HH and flame area justabob..just backward
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nytecam
Postmaster
Reged: 08/20/05
Loc: London UK
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Re: Round 3: ETX60 and DSI
[Re: seeker372011]
#2280445 - 03/25/08 04:58 AM
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Quote:
could that galaxy be M 104?image scale looks ver large though unless you did some resizing
No - not Sombrero M104 - it should look like this [bottom left-via 12"SCT -check field stars!]
Quote:
thats a great shot of the HH and flame area justabob..just backward
Agreed - JAB is 'hiding' and not publishing his great efforts
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MtnGoat
Carpal Tunnel
   
Reged: 02/18/07
Loc: Columbia Gorge, WA
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Re: Round 3: ETX60 and DSI
[Re: nytecam]
#2280456 - 03/25/08 05:09 AM Attachment (67 downloads)
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Ok, I was confused because I entered 4725 and didn't hit goto. I had been looking at 4565. Looks like I got pretty lucky on this shot, not bad at all. I can even see another fellow at the side there, it's late and I haven't looked it up yet.
Apparently when you play with histograms in Envisage when viewing, it saves the data with compressed range....
;( grrrrrr. That's all for post processing on that one. Oh well, could be worse.
Nothing else worked out tonight, tried M51, M64, 4725, and glob 5053. The haze was killing my signal to noise. It must have thinned out for 4565 though. Drizzle is the shiznit, I went inside to put some cats away, started a fire, came back out, and had 40 stacked and this on the screen.
And I sure love this cheap lil scope. This thing is a keeper. I'm dying for Surplus Shed to get my 80mm objective in.
Thanks for the encouragement, folks. Nytecam, if I ever get back to London I'd like to see your setup! Every year or two I wind up in Farnborough (sp?) for a couple weeks, working at Qinetiq.
NOTE: I updated this image when I figured out what the faint fuzzy at right is. There may be others hidden in the image, I'm interested to see how deep a 10 minute shot with the 60mm went. Apparently 13.5 so far.
Edited by MtnGoat (03/26/08 03:08 AM)
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MtnGoat
Carpal Tunnel
   
Reged: 02/18/07
Loc: Columbia Gorge, WA
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280459 - 03/25/08 05:16 AM Attachment (62 downloads)
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Here's a failed shot of 5053, one, Envisage crashed and I lost my darks (maybe there is a way to reload them?), two the haze really thicked up.
However, this is a fascinating study in periodic error because now the hot pixels show up and you can see the green one on the right side walking all over the place. It is also an amazing proof of what Drizzle does...all the real stars are more or less in the right places.
I really should get around to training the drive. That is most likely the source of 2 out of every 3 frames failing to stack.
Running an undarked image looks like a great way to check your periodic error. I think I'll train the drive next time, then redo this shot and see if my hot pixel does it's mambo in a smaller area.
Edited by MtnGoat (03/25/08 05:35 AM)
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nytecam
Postmaster
Reged: 08/20/05
Loc: London UK
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280495 - 03/25/08 06:36 AM
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Thanks MntGoat for the update - that's a great NGC4565 and nicely flipped The non-darked sampler is informative and shows how hard Drizzle is working [presumably in altaz mode?] and how well you've mastered the system Certainly my Starlight Xpress camera software only copes with drift errors during track 'n stack subs of a few pixels - hence on the ETX-70 mount I keep subs to ~5sec
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1_old_dog
sage
   
Reged: 09/07/07
Loc: Smoky Mnts
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2280544 - 03/25/08 07:35 AM
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MtnGoat:
My son looked at the ETX forum this morning before school and he called me when he saw your image, WOW that's a great shot of NGC4565, you're doing great.
It's been cloudy for the last couple of nights here and he's just itching to get back outside with his ETX60.
thanx for posting OD
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FebStars
Pooh-Bah
   
Reged: 02/02/06
Loc: MA
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Re: Round 3: ETX60 and DSI
[Re: 1_old_dog]
#2281739 - 03/25/08 04:55 PM
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Great stuff, MtnGoat!
Tom
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LLD
Lucky so far
   
Reged: 11/14/05
Loc: Ma..
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Re: Round 3: ETX60 and DSI
[Re: FebStars]
#2282212 - 03/25/08 08:16 PM
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Awesome picture's MtnGoat & Bob!
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justabob
Carpal Tunnel
Reged: 05/05/07
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Re: Round 3: ETX60 and DSI
[Re: LLD]
#2282842 - 03/26/08 02:13 AM
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MtnGoat, it would be interesting to see if you can capture the central star in M57 with the etx60 and dsi color. That is what got me hooked on imaging, when my little etx90 with focal reducer and dsi pro got down to mag 15.3.
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justabob
Carpal Tunnel
Reged: 05/05/07
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Re: Round 3: ETX60 and DSI
[Re: justabob]
#2282845 - 03/26/08 02:23 AM
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I think these were 15 sec exposures in polar mode on the etx mount. No drizzle. I bet the etx60 can do it.
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MtnGoat
Carpal Tunnel
   
Reged: 02/18/07
Loc: Columbia Gorge, WA
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Re: Round 3: ETX60 and DSI
[Re: justabob]
#2282858 - 03/26/08 03:04 AM
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I think you're right. I figured out that the faint blob in the right of the frame is 4562, which is mag 13.5. A stellar source should be simpler even if it's fainter. I'll be sure to include that as a goal as M57 comes around.
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buckaroo
Space Cowboy
   
Reged: 05/26/06
Loc: Washington
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2285033 - 03/27/08 12:10 AM
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Good job Chris!
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nytecam
Postmaster
Reged: 08/20/05
Loc: London UK
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Re: Round 3: ETX60 and DSI
[Re: MtnGoat]
#2290007 - 03/29/08 07:17 AM Attachment (48 downloads)
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MtGoat - well done - I've stretched your image and marked stellar mags with just a word of caution - Megastar mags [from my decade old edition] are not perfect but pretty good.
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ngc6475
Fearless Spectator
   
Reged: 03/02/02
Loc: 38°21'N 120°55'W
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Re: Round 3: ETX60 and DSI
[Re: nytecam]
#2290943 - 03/29/08 03:07 PM
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Wow! Good job!
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Talstarone
Lunar Man
   
Reged: 09/12/06
Loc: Pinetops, NC
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Re: Round 3: ETX60 and DSI
[Re: ngc6475]
#2295768 - 03/31/08 07:36 PM
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Excellent Work Indeed.Gotta Love those images.
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