800Whrs+ Staying Up Late ideas |
800Whrs+ Staying Up Late ideas |
Jun 6 2009, 07:04 AM
Post
#1
|
|
Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
With Spirit producing an annoyingly large amount of power given her current predicament, the time may well have come to re-open the Gusev astronomy society. Anyone have any dusk / nightime observation ideas?
|
|
|
Guest_Oersted_* |
Jun 8 2009, 12:59 AM
Post
#2
|
Guests |
How fast can they take consecutive images? Would be nice to have a max. speed sequence, an *almost* movie, hopefully with a dust devil in it...
|
|
|
Jun 8 2009, 01:40 PM
Post
#3
|
|
Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
How fast can they take consecutive images? Would be nice to have a max. speed sequence, an *almost* movie, hopefully with a dust devil in it... The "fast" dust devil movie gets 3 sec per frame at first, before slowing down. Less optimized imaging can be done at 10, or more normally 20 second spacing. Going faster requires other tradeoffs. QUOTE (CosmicRocker) The L7 and R1 filters are high-pass filters, which I thought, should pass all wavelengths shorter than the nominal cutoff. The L1 slot, which contains no filter, should also allow UV wavelengths through to the detector. These CCDs have little UV response. L1 in particular would emphasize longer wavelengths even if there were UV sensitivity (ie, you might know you 'discovered' something but not know if it is zodiacal light, a dust riung, IR airglow, UV aurora, etc.). QUOTE (akuo) Would it be technically possible to track the Martian sky with the motors in the mast? No, the mast precision is large compared to the typical star-trails. QUOTE (Stu) just wondering why Earth should be iffy..? It's not going to be an awful lot fainter than Venus..? Earth is 1.6 magnitudes fainter in a clear sky. With current dust levels, I'd guess we won't see much until the Sun approaches 10-15 deg below the horizon. At those angles (E+V 15 deg up) the few extra deg up for Venus translates into another magnitude or two. My hunch is there is a narrow window about 50-75 minutes after sunset for Venus, with the best chance for Earth on the early side of that window. We'll see. (A couple years ago I could have been quite precise; my notes aren't that good.) |
|
|
Lo-Fi Version | Time is now: 22nd May 2024 - 06:15 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |