Quote:
Originally Posted by Camelopardalis
Yeah it's still fresh in my mind, still experimenting but been getting some interesting results! Very exciting times 
The Cool Edge basically goes in the hole opened up when you remove the Fastar secondary mirror. This is fine if you want to cool it down quickly at the start of a session, but you have to remove it and put the secondary mirror back in place before you can do any imaging  The Tempest system also do a secondary fan, same problem obviously. The more interesting ones are the Tempest fans that replace the side vents on the Edge HD tubes, as these are permanently mounted (it's only 2 little screws) and can be on while you're imaging, drawing a constant stream of air past the back of your mirror. As I've found out, just be careful if the air is moist and the temperature dropping as it'll draw moist air in there too and I've had my corrector mist up on the inside  maybe I should have just had the dew heater up higher 
I'll be interested on what you find for the powermate... at the moment, I use a Clicklock visual back with Televue 2" to 1.25" adapter before the 2.5x powermate... but my little camera is only the size of a 1.25" plossl  |
haha yes the 5D is quite a big thing in comparison to yours! I will find out. I will look into the tempest system further, for some reason I thought the Cool Edge still allowed the use of the secondary (not sure why I thought that!). I can always turn the Tempest off as well if I find the tube currents get too strong/mist builds up! Will look into that further tonight!