View Single Post
  #18  
Old 02-06-2014, 08:05 PM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
Ah jeez Ray that's awful. My pics are scattered everywhere. I don't even know where many of them are myself. Most of these colour ones are in one album. These are print size by the way.

M8 and M20 with a 6 inch F5 Newtonian, 20 minutes on Fuji 800. No coma corrector for it back then. I only got one last month!

Many of these film pics have a story and Comet Hyakutake has one too. See, it was my all time favourite comet. Taken in March 1996 through a 400mm F5.6 Tokina telephoto, Fuji 800 20 minutes exposure. As newbies might not be aware, back in the film days we tracked manually (I still do) with a guidescope or OAG. Comets move fast near close approach to Earth. Not a problem now, just take a bunch of 30 second subs and stack them. Not back then! If the comet had a bright enough nucleus we could place it in the cross hairs of the illuminated reticle eyepiece and very carefully track on it. That's what I did for this comet, with a home made crosshair glued onto an old binocular eyepiece, placed into a 68mm guidescope. I only recently bought a genuine motor drive for that mount. Back then I used a geared tape recorder motor varied in speed with a variable potentiometer, with the 6" scope precariously balancing on an old Tasco mount that came with an 80mm refractor. DEC corrections were done with a steady hand via a slow motion control! How did I ever get this pic? It has only turned out to be my favourite comet pic of all time!
Attached Thumbnails
Click for full-size image (M8_M20J.jpg)
183.5 KB47 views
Click for full-size image (HyakutakeJ.jpg)
175.1 KB64 views
Reply With Quote