FOOTPRINT
22-04-2006, 01:46 PM
Hi All,
Had a go at doing lots of 4 Min. Exp. then adding them, but dident get many good exposures as I forgot the Dew Sheild, whammo, Ill put it on next time, anyway these Pix are both 6 x 4 Min. Exp. (was aiming for 15 Exp. each) dark frame subtracted (another small problem, I dident use DFs taken at the same time and it was much cooler than when the DFs that were used were taken, note the noise in the M83 Pix- spiral arms) guided, ISO-800.
All this goes to show, if you do it right, and youll get good results, or half baked as these are if not.
(note the two small galaxies on the lower right of M83)
cheers.................Jim
Had a go at doing lots of 4 Min. Exp. then adding them, but dident get many good exposures as I forgot the Dew Sheild, whammo, Ill put it on next time, anyway these Pix are both 6 x 4 Min. Exp. (was aiming for 15 Exp. each) dark frame subtracted (another small problem, I dident use DFs taken at the same time and it was much cooler than when the DFs that were used were taken, note the noise in the M83 Pix- spiral arms) guided, ISO-800.
All this goes to show, if you do it right, and youll get good results, or half baked as these are if not.
(note the two small galaxies on the lower right of M83)
cheers.................Jim