Don, My DSI LRGB image of Holmes taken on Nov 2 shows the same leading compression wave and pressure drop type effect too. I don't think it is an artifact. ...
Don, My DSI LRGB image of Holmes taken on Nov 2 shows the same leading compression wave and pressure drop type effect too. I don't think it is an artifact. ...
Anjal et al., It also shows up in Mark's photo, but not in the others. The physical effect is most likely due to the flow of this projectile in the whatever...
Have y'all seen this really long exposure image of Holmes on Astronomy Picture of the day website? http://antwrp.gsfc.nasa.gov/apod/ap071105.html It's superb....
Very good. Thanks, Don ... **** Note change in telephone numbers **** Don E. Bray, Ph.D., P. E. Don E. Bray, Inc. Mail P. O. Box 10315, College Station, Texas...
Don and Anjal, I just put up my latest LRGB image of Holmes which was also taken on 11/02. I'm kind of new to RGB processing and mine came out a much...
Kelsey, You are right, it is there. The difference in image density is subtle, but if you look at it correctly, that outward leading front is unmistakably...
Kelsey, Did you adjust the color weights on the R, G and B channels? You have to do this to account for different spectral transmission areas by the filters...
I didn't adjust the weights at all. I copied each filtered black and white image (unedited) into the corresponding R, G, and B channel of the image which is...
Hi Kelsey, What version of Photoshop are you using? I have a really old version (PS 5.0LE) which doesn't have the ability to do discrete channels in the...
Anjal, I just ordered a JMI NGF-DX2 low profile focuser from astromart for my Newtonian which should allow me to actually bring the DSI and/or webcams to...
All this talk about the compression wave...I forgot to say that I observed it last weekend with Sam Houston's 24" Dob. The compression wave you talk about was...
Michael, What a great job you have! About the compression wave, have we ruled out the possibility that it's just an optical illusion created by the angle at...
The subtle changes that we see at the leading edge are caused by differences in the density and the associated light speed of the material, hence there are...
Maybe I need to add a little more. The compression wave is at the very front of the disturbance, leading the comet "rock" by some distance. This area is...
We have found all of the missing parts to the 8" Tak Epsilon Astrograph, including the counterweights and electronic drives. All we need now is for Anjal to...
Forgive my ignorance here, but is this compression wave that same phemonon that is being reported as debris from an explosion on the comet (NASA & CNN) that...
hehe, well, as a matter of fact, we have an astronomy club meeting this saturday at Kaldi's at 6:00. The only catch is that day is my daughter's birthday and...
yes, that is what is most likely is. Some of it is outgassing that has taken place after the explosion, but at least a portion of it is from the explosion...
Thanks, Mike, for researching this. That is certainly a reasonable explanation, and makes these photos all the more significant. don . ... **** Note change in...
Mike, I'll try to make the 6 PM meeting at Kaldi's on Saturday and we can go to the observatory after that. I'll get a gallon or so of nanopure water to rinse...
Hi All, I thought I'd tell you guys about this internet seller of astronomy equipment. I have dealt with Agena Astroproducts (www.agenaastro.com) on several...
Anjal, I am sending this guy my resume to apply for the writing and/or the product testing position. I feel that I would be pretty well qualified for the...
Mike, I downloaded the NJP mount instruction manual from Takahashi's website. I will bring it when I show up tomorrow. Hopefully we can address the mount...
Hi All, We have some news and on the Takahashi Epsilon 200 Astrograph and NJP mount at the SHSU observatory. Last night Mike, Brian and I spent several hours...
Anjal, I picked up a bottle of the "blue solution" at Texas Nautical Repair when I went down a few weeks ago. It has enzymes that are supposed to remove stuff...
Mark, If it is an enzyme solution it will have at least a few percent water to keep the enzymes alive. The water will dissolve these old style coatings....
Whoa! Those are old. Mark From: brazosastro@yahoogroups.com [mailto:brazosastro@yahoogroups.com] On Behalf Of anjal_sharma@... Sent: Monday, November 12,...
Mark, Yup. The scope was manufactured ca. 1982 or so. The giant field corrector has old style AR coatings that impart a brownish tint to the lens. These do...
