Galaxy list for SN hunting
Posted 24 October 2012 - 08:41 PM
Anyone here that hunts for SN on a regular bases, could you show/tell how you go about the hunt?
Posted 27 October 2012 - 08:08 PM
a) close enough that a supernova would be easily visible in your telescope
visible from your site for reasonably long periods of time
c) few enough that you can visit each galaxy about once every 3 or 4 nights
So, figure out the limiting magnitude of your system, and pick galaxies with distance moduli which are roughly (your limiting magnitude + 16) or so. That should yield supernovae which your system can detect for a few weeks, at least.
Posted 28 October 2012 - 08:31 PM
Posted 29 October 2012 - 11:48 AM
I'm confused if you intend to do visual or imaging SN hunt From the Red Zone you should get down to mag 17/18 stars in ~30s exp with a sensitive [perferably mono] CCD camera + C14 with no trouble - good luck - it's a needle-in-a-haystack enterprise. Check out Bright Supernova homepage
Right now I only have my 6" Reflector. Since I can faintly see a mag15 galaxy with 100sec, lets say I pick limiting mag of 13 or 14(I know it seems bad but I guess that's because I'm in a Red zone). So I add that to 16 to get my DM. Is that correct? Doesn't size of the galaxy also come into play. The mag15 IC5180 I picked up was I think 1.1arc min.
Posted 29 October 2012 - 12:48 PM
Posted 29 October 2012 - 03:20 PM
How faint can you record stars? SNe are stars - gxys are diffuse and not a useful guide as to how faint you can record stars in a given exposure :o
Imaging that's why in the last post I was talking about the exposure and faint galaxy I could pick out. Since I wont have the new equipment for a long time I just what to find out about my current setup. Its a 6" Reflector on a GOTO mount with a Orion StarShoot Deep Space Mono Imager III. With this setup I can faintly image a 15mag galaxy. That galaxy was IC5180.
Posted 29 October 2012 - 04:03 PM
Posted 30 October 2012 - 12:09 AM