While I await delivery of my new camera, i was just thinking if there is any merit in going for CF over xD for memory cards. Ive ordered a 1GB xD card to get me started, but as the camera also accepts CF is it a better option? As for the connectivity, either CF or xD is fine for the transfer of images as I have media readers for both.
Andy
8 hrs ?????
Must have been using a pinhole "lens"........and a dang small one at that !
Ted
Edward Thurston said: 8 hrs ????? Must have been using a pinhole "lens"........and a dang small one at that ! Ted
with an 8hr exposure, I think you would still get an image with the darn lens cap on!
Hi Andy, I'm still a beginner in astrophotography. Have just got my second hand 300D last year after using films for a while, but the weather here in Malaysia has been very very bad for me to have any chance to progress faster with my learning. Below is the most recent shots taken in December last year. (Can you imagine how bad is the weather here that I have not taken any shot like that in 8 months time?)
http://i57.photobucket.com/albums/g222/MichaelTCT/Astronomy/Orion20x120s.jpg
http://i57.photobucket.com/albums/g222/MichaelTCT/Astronomy/GreatOrionNebula6x60s.jpg
Please comment.
I routinely use multi-hour exposures on dark nights. 8 hours is very doable at ISo 100 at F22. Digital can't handle it with off-the-shelf cameras due to infrared bleed from the sensor amplifier. That and the battery crashes after holding the mirror up for an hour or so.
I built a rig to use a car battery, inverter and a Canon AC supply on a Canon 5D but I get infrared bleed after about 2 hours.
Hi Edward,
A continuous 8 hrs exposure is possible with an external cooling system to reduce the noise.