Just wanted to say hi. My SN search work is ad hoc. My primary work revolves around minor planet photometry and the search for Binary Asteroids. On nights...
Hi All, How do I use r25 to work out the galaxies inclination? Since it is the ratio of d25 max to d25 min my reaction was r25 = 0 implies face on (log 1) but...
Given the number of Sn of all types found in nearby galaxies (ie within the range of amateur equipment) what benefit is there in finding more? Will it ever...
The SNe found by amateur's are often the brightest and most nearby ones. Even if they become fewer in numbers than the distant ones discovered by large...
... As with anything else, this depends on how you look at it. There is a great deal that we don't know about supernovae, just like there is a great deal that...
Wolfgang, I confirm the 2 "stars", probably an SN near PGC60463. I am sorry I had some problems with my autoguiding so I have just 4 images 60s on this...
Can anyone tell me how r25 specifically relates to a galaxies inclination on the RC3 catalogue. The 'help' text indicates a 'relationship between short and...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 Brian Skiff, of course, the resident expert on all things regarding magnitudes! He would be the one to...
15480 Empire Rd. Benson, AZ 85602 hm ph: 520-586-2244 The explanation you gave is very clear, Stefano, but I think 0.2^2 should be .04 rather than .0004, which...
Many thanks Stefano. The explaination is very clear. Cheers David ... should be .04 rather than .0004, which should give a value where M101 is a bit more...
Excuse me for the mistake, but my hands are faster of my brain ! In my formula I have typed 0.02^2 instead of 0.2^2. Bye Stefano ... From: Wayne (aka Mr....
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...
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