Ok, This doesn't seem to work for all values of R25. Using basic trig and d/D = 1/10^R25, where R25 is the log R25 value from the RC3 catalogue. Is there a...
Given that there is a seemingly good absolute brightness determination for each type of Sn (Miller 1999, Richardson 2002) and for all nearby galaxies we have a...
Hello, I have this observation : SN2007kc 20071005.763 158CR TON Image : http://www.rochesterastronomy.org/sn2007/u8400s3.jpg TOL = 0.25m f/6.15 MX916 CCD or...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 You would think so, David, but you have to remember that those values are _means_, which means there can...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 I don't have my own image, Chat, but you can make one simply by going to the STSCI site which contains...
Hi Wayne, The Virgo cluster is around 18Mpc distant. Using Richardson's Mean and Standard Deviation, 1 Sigma at Magnitude 12 puts the distance at between 12...
Hi all, I am new to this group. I recently started an automated search from Perth Western Australia and have had some success - just discovered SN2007rv. ...
... Congratulations! ... "CR" is a "clear" (no filter) compared to R references. Odd Trondal did some research and found out that this comes close to "V". -- ...
David, Thanks. I did some research and with the formulae for response of unfiltered CCDs here; http://www.aerith.net/astro/color_conversion.html modeled what...
I'd like to get started doing a supernovae search. I've poked around the net to get a handle on all the requirements. I've set up a reasonable remote...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 Hi Michelle, You're asking some good questions, but you probably still need to see some diagrams from...
Wayne, Thanks for the info. I'm trying to not have to buy another filter wheel. My 5 position wheel is full. Dang... those things are so expensive. Thanks...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 Error budget is one of the hallmarks of good science. Unfortunately, I am not a good scientist as far as...
... It's there. I just checked both: http://www.supernovae.net and http://www.RochesterAstronomy.org/snimages Both worked. It might be that caltech.edu is...
Hi David Emails sent to the address on your website seem to get rejected. I have tried a couple of times several days apart so I suspect there is a problem -...
Hello to everyone. I have a suspect of supernova in the galaxy NGC1832 (magnitude: 15.4, coordinates RA: 05 12 03.17 DEC: -15 41 01.5 (J2000)). Unfortunately...
... I tried to get an image from New Mexico but the moon made things very difficult. I could not see any trace of a SN in my median added 3 x 60 seconds...
... I tried to get an image from New Mexico but the moon made things very difficult. I could not see any trace of a SN in my median added 3 x 60 seconds...
Dear Dr. Green, following the previous mail, I confirm the discovery by Elisa Londero (Gemona-Italy), on behalf of CROSS Program (cf.IAUC 7373), with the...
Dear Dr. Green, following the previous mail, I confirm the discovery by Elisa Londero (Gemona-Italy), on behalf of CROSS Program (cf.IAUC 7373), with the...
For the past few weeks I have not had write access to: http://www.RochesterAstronomy.org/snimages I just got it back today, so I'll do a full update that web...
Your work is appriciated all over the world David. Lode Stevens ... From: David Bishop To: isn_chat@yahoogroups.com Sent: Thursday, February 21, 2008 2:43 PM ...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 You've done yeoman work lo these many years, Dave, and I, for one, have enjoyed it immensely! The BSN...
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