Hi Paulo, This may be a bit off topic for a CCD imaging group, but you mentioned Obsession in your post. I picked up a used 15" Obsession about two years ago...
59247
Rick Wiggins
meunage
Sep 4, 2007 10:55 pm
Hi Members, I would like some advice regarding ventilation of my observatory. Background: I have refurbished an old 10' Home Dome and added a few improvements....
59248
Randy Nulman
randy_nulman
Sep 4, 2007 11:27 pm
Hi Rick, Based on things we learned from Ron when building our observatory are that you should have ventilation holes on the opposite side of the ventilation...
59249
Eddy
eddydel5
Sep 5, 2007 1:55 am
Hi, I know that using the same frame(s) will not increase the S/N ratio. But, since I was outside imaging and thinking about several things, I was wondering if...
59250
Jim Lafferty
shogunxp
Sep 5, 2007 2:13 am
I do that frequently. It seems to work ok. For example I might create a Ha-SII-Ha-0III using the same Ha data for both the L channel and the G channel with...
59251
salgiambruno
Sep 5, 2007 5:14 am
Good advice, Ron. Both of your mentions for the cause of the problem make perfect sense, but weren't readily apparent problems, at least not me. Is there any...
59252
salgiambruno
Sep 5, 2007 5:14 am
By the way, the URL should be: http://www.lanode.com/priv/7000.jpg <http://www.lanode.com/priv/7000.jpg> Sal ... short. ... [Non-text portions of this message...
59253
howsoft_paul
Sep 5, 2007 5:15 am
Ron, Thanx for the explanation. It made a lot of sense after I went out and stared at the mount for a while. One further question - do you actually remove...
59254
Wodaski - Yahoo
rwodaski
Sep 5, 2007 5:31 am
There isn't very much star size increase from long exposures compared to what you are dealing with from the other causes. I've routinely taken 30, 45, and...
59255
Wodaski - Yahoo
rwodaski
Sep 5, 2007 5:33 am
I don't remove those wires, no. They are fairly minor - and they don't extend out the back, which is where the weight really comes from to make them overly...
59256
nicolas outters
golfdemornex
Sep 5, 2007 8:52 am
Hello all, This object is not so easy to do with narrowband filters, OIII is so particulary difficult to process and challenge is to keep a good S/N on the ...
59257
Eddy
eddydel5
Sep 5, 2007 9:05 am
... create a Ha-SII-Ha-0III using the same Ha data for both the L channel and the G channel with narrowband filters. Thanks for the info Jim, Eddy...
59258
Eddy
eddydel5
Sep 5, 2007 9:07 am
Very nice Nicolas!! Lots of detail Eddy...
59259
jmize@...
sfojmize
Sep 5, 2007 1:40 pm
Rick, when I first read your post I asked myself, 'Which direction is the predominant outside wind coming from?' I'd thimk you'd get a better flow if the fan...
59260
wenjehpeng
Sep 5, 2007 2:32 pm
Hi, everybody My imaging equipments are ST 2000XM , VC200L +reducer (f=1255, image scale 1.21¡¨) and Takahashi EM 200. Supposed I binned internal guide chip...
59261
howsoft_paul
Sep 5, 2007 2:33 pm
Ron, Thanx. It sound like you think the weight of the wires hanging out the back is a major contributor to the issue. Do you suppose that if the weight...
59262
Wodaski - Yahoo
rwodaski
Sep 5, 2007 2:37 pm
What determines if that will work....is whether it works! I have seen cases where taking the weight off the wires made things OK, and cases where it didn't. ...
59263
jmize@...
sfojmize
Sep 5, 2007 2:53 pm
Eddy, check out Rob Gendler's "Multiple Luminance Layering (LLRGB) using Photoshop"...joe :) http://www.robgendlerastropics.com/LLRGB.html and ...
59264
Rick Wiggins
meunage
Sep 5, 2007 3:48 pm
Hi Randy, Congratulations on your new setup. It is very impressive and I'm sure you are enjoying the capability. Thanks for the advice. Since I already have...
59265
Mark de Regt
soccernutsea...
Sep 5, 2007 8:20 pm
Hi, The twin demons of horrible weather in New Mexico and my bourgeoning passion for racing (it's not good to race on no sleep) have kept my output down, and ...
59266
Eddy
eddydel5
Sep 5, 2007 8:50 pm
... using Photoshop"...joe :) ... Thank you, Joe. Very helpful. Eddy...
59267
Mark de Regt
soccernutsea...
Sep 5, 2007 9:01 pm
Eddy, As others have said, that is pretty standard. But there are problems with using Ha data in an RGB (or HaRGB) image--The narrow band filter will result ...
59268
Eddy
eddydel5
Sep 5, 2007 9:12 pm
... problems with ... will result ... result in odd ... The ... data. I ... get it ... Thank you Mark. Seems that quite some people are using Rob's ...
59269
Mark de Regt
soccernutsea...
Sep 5, 2007 9:22 pm
Yes, doing tri-band narrow band imaging does avoid the halo problem, but you get false colors (very beautiful, if done right). I'll be trying that this ...
59270
Neil Fleming
neilfleming
Sep 5, 2007 10:30 pm
Nice shots, Mark. Good to see you back! ... www.flemingastrophotography.com Direct from Boston - brilliant diamonds in pea soup...
59271
Dave Bailey
dcb84121
Sep 5, 2007 11:09 pm
Those are really impressive shots - Thanks for sharing. Dave Bailey A passion for racing? What do you race? Marathons? Mountain Bikes? Go Carts? NASCAR?...
59272
Joe Morris
jmorris6966
Sep 6, 2007 1:13 am
I'm confused about applying darks and flats to images of the same target of which some were taken on one side and the rest on the other side of a meridian flip...
59273
Mike Reid
mikertx
Sep 6, 2007 3:45 am
I stopped using the "flip" option in ACP for this very reason. It's less confusing to just flip the images post calibration and before stacking. That way you...
59274
astroimage2002
Sep 6, 2007 9:52 pm
Hi Everyone, Will a lot of the information that is in the new book be useful in older versions of Photoshop? Brian...
59275
Wodaski - Yahoo
rwodaski
Sep 7, 2007 12:26 am
A lot will be useful, but key portions will not. The book's primary audience is for users of Photoshop CS or later (CS2, CS3). Ron Wodaski ... From:...
