What is the title and where can I purchase your book that covers Zone processing. I own your privious book and it has been instumental in my learning process....
... One method is to combine different exposure length images. If (for instance), you shoot a set of images, with the longest exposure that does not cause any...
Thanks for all the feedback so far. I arrived at my long list by selecting scopes in the 350-550mm FL. My overall objectives is to find a scope that will give...
Hello Wendy, I use a grey filter which has a transmission of only 1% (Baader HP). My images of the moon: http://www.luluobservarorium.de Click on solar images....
I am a new member. I own a NS 11GPS and a cheap Celestron CCD webcam only good for planetary work and again it is the bottom of the line. My scope is Fastar...
HI i was out friday night at a friends house with some darker skies and a very clear and steady night...i finally aimed the scope at m78 to shoot this...
Hi, I guess I did not follow or look at the instructions before posting. I posted a message re Canon 20Da this m, the realized I should have had approval. Alan...
I am a relatively new to astrophotography and continue to have some star elongation only in the X axis. I image with a TV 102 reduced to f6.9 at 700mm. I...
The 20Da will certainly be a great purchase for astronomy. I've used one, and it works well. It will be better on a faster scope (I tested on an f/2.8 ...
I'm not sure why you are not getting flexure - this type of elongation is the classic symptom of flexure. It's also possible that with the GM-8 you have too...
... Nice shot, Jamie. M78 is one of my favorites, and you've captured the beautiful blue quite nicely. Have you tried additional processing to bring up the...
... The Canon ads in Popular Photography say you can buy a filter to attach to the lens, to replace the one they removed for astro imaging. Mike ... Mike Dodd ...
Here is a rose of a differant color. NGC 2237 in narrowband, using the Hubble palette. 90 minutes for each bandpass with the Astronomik 13nm filters; SII, Ha &...
All lovely images Mike! I love the "tadpoles" in the IC 405 image. I always thought those would make a nice hi-res shot. Hope you have a terrific 2006, and it...
Nice image Don The optics look good on MK-69 Any negative issues with this scope. It is one I am considering. Charlie http://www.astrofx.com In a message dated...
Great to hear from the boss. I appreciate the reply. Can you explain the fact that I am seeing subpixel drift in my Astroart window but still getting...
Ron, I also get some elongated stars in my setup intermittently. I use a Tak FSQ 106 with an ST-10, and seem to get it only intermittently. I will try and see...
Is the rack and pinion on the guide scope racked out quite a ways? Is thethere an additional extension for your guiding camera to reach focus? If these are...
Jamie, You have very nice nebular colors and the framing of the nebula is good. I do think you clipped the black point somewhat. You have a lot more faint...
Jamie, Thanks for you nice comments. I used 10 minute sub-exposures with my ST-10XME in order to bring out the faint arms of M81. With sub exposures that...
For those doing deep sky imaging with scope apertures 6 inches and smaller, and, very basic or modest CCD equipment. Of particular interest to those using web...
One more for the comparison page: http://pk.darkhorizons.org/images/m13color.jpg As long as the weather remains cloudy, I'll keep processing these -- lots of...
Hello all.I went out today to find out what my f-stops are on my imaging set up and this is what I found.With my Canon Digital Rebel 300D connected to my...
... I don't have a DSLR, but keep an eye on the email lists, and read Popular Photography, so the best I can offer are a couple of general observations. I do...
I have no idea why your timing-calculated FOV is showing f/7 - I don't use that method, as taking a picture and measuring the FOV is completely and totally...
Hello again.You replied to my e-mail on FOV with my Rebel.The equation I used wa F1 x (T1/T2)=F2.That is F1 being the original focal ratio with no reducer...
Alan, Join the "digital_astro · Digital Astro" Yahoo Discussion Group. Ask your question there or search the archives. You will certainly find the information...
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