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#1
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![]() "Nav" wrote in message ... OK it will be clear enouch for both of you on the night of 23rd Jan but you may have to snap it through a sucker hole. Just make sure you note down the exact local time that you snap the picture. You should both use a 3 minute exposure at about ISO1600 for your scope apertures to brinbg up the star field. Perhaps our resident Professional Photographer with the ~ 7" refractor (1000mm f5.6) would like to add to this advice? You want me to take a photo of the comet with my Nikon for comparison?? Excellent... contact me on the 19 of Jan /05 with the reminder. I'll give it a shot. If I calibrate the flash.... Do you think I'll get any Red Eye?? Will you still be able to work out the distance from the photos? BTW.... it's a 6" lens dia...... 36" long lense when extended not including the shroud.... no mirrors..... is that okay to use? Should I load a gel?? CM |
#2
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![]() Overproof wrote: "Nav" wrote in message ... OK it will be clear enouch for both of you on the night of 23rd Jan but you may have to snap it through a sucker hole. Just make sure you note down the exact local time that you snap the picture. You should both use a 3 minute exposure at about ISO1600 for your scope apertures to brinbg up the star field. Perhaps our resident Professional Photographer with the ~ 7" refractor (1000mm f5.6) would like to add to this advice? You want me to take a photo of the comet with my Nikon for comparison?? Excellent... contact me on the 19 of Jan /05 with the reminder. I'll give it a shot. As I suspected, you lost some aperture there CM (1000mm fl at f5.6 requires a minimum 7" objective lens). Anyway, put it in your diary. What mount will you use? Cheers |
#3
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![]() "Nav" wrote in message ... Overproof wrote: "Nav" wrote in message ... OK it will be clear enouch for both of you on the night of 23rd Jan but you may have to snap it through a sucker hole. Just make sure you note down the exact local time that you snap the picture. You should both use a 3 minute exposure at about ISO1600 for your scope apertures to brinbg up the star field. Perhaps our resident Professional Photographer with the ~ 7" refractor (1000mm f5.6) would like to add to this advice? You want me to take a photo of the comet with my Nikon for comparison?? Excellent... contact me on the 19 of Jan /05 with the reminder. I'll give it a shot. As I suspected, you lost some aperture there CM (1000mm fl at f5.6 requires a minimum 7" objective lens). Anyway, put it in your diary. What mount will you use? I've got 3... none with tracking ability for a 3 minute exposure though. I'll have to borrow one from Dalhousie University.... CM |