Search found 21 matches
- Wed Mar 30, 2005 8:24 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Avoiding Sun Exposure
- Replies: 2
- Views: 4774
hacking the shutter?
I assume (for lack of looking) that the same motor-driven wheel is used in the CONCAM3 cameras as SBIG used in older models like the STV. If so, one could feasibly modify the shutter drive for those systems to allow an external circuit (photodiode looking at the outside sunlight + opamps) to run the...
- Tue Mar 15, 2005 10:05 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Sporadic meteors
- Replies: 8
- Views: 7536
Fireball on 3/12UT ?!?
My neighbor (a fine, upstanding citizen not given to UFO-ism :-) told me this weekend that he had seen a spectacular W->E meteor/fireball about 10 minutes after 10PM local on Friday night 3/11 (0810+/- 031205 UT). He described a classic, with a long greenish tail splitting into five smaller pieces n...
- Mon Feb 28, 2005 11:37 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
HL network offline
Over the weekend a power failure took out a router in the path from Haleakala to the Real World, so the network link to the mountain is down, though the concam is ok as far as I know (the failure was at the downhill end of the link). We have not yet heard any estimate of how long it will be out, but...
- Wed Feb 23, 2005 8:42 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
- Tue Feb 22, 2005 9:05 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
HL concam internal temperature plot
Since people are expressing interest, I attach a link to a couple of plots showing the internal temperature of the system over 2 week-long periods, in Nov 04 and Jan 05. (Note that the nov data doesn't have Relative Humidity data; sorry, no way to make this real-time...) The probes were placed on th...
- Wed Jan 26, 2005 6:52 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
we're back
Concam was inside to dry out over the weekend, sorry someone forgot to email. It is back up and appears to be working as of tuesday 1/25.
Hopefully we won't have too many more storms this winter!
Hopefully we won't have too many more storms this winter!
- Wed Dec 15, 2004 7:22 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
HLam back, with blanket
I put the camera back up at noon 12/14, with a "blanket" of 3/8" foam insulation to try to prevent the outer aluminum plate from supercooling to the sky. I have a temperature logger inside to monitor the lens, the plate, and the ambient temp & Rh inside the box to get a better ide...
- Wed Dec 08, 2004 11:14 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
hlcam -> drydock
The weather being grim, we took down the camera at ~noon to try to dry it out. I'll leave it in a warm, toasty officce for a couple of days and see if that helps. There was no water/dew inside the enclosure when I openned it up, so the moisture in the lens must be condensation or else its leaking fr...
- Thu Nov 18, 2004 2:00 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
- Thu Nov 18, 2004 1:53 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Heat the lens
- Replies: 12
- Views: 14402
- Tue Nov 16, 2004 5:31 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Heat the lens
- Replies: 12
- Views: 14402
- Mon Nov 15, 2004 7:53 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Needed: Very small footprint PC
- Replies: 3
- Views: 6734
mini-PCs
We have used a couple of small "book" PCs from iDOTpc.com here, the ITX format is nice, and the via motherboards seem pretty good though the fanless version with the crusoe chip is pretty slow. However, they ran redhat out of the box, and happily drive an sbig camera. Their newer "pro...
- Mon Nov 15, 2004 6:13 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
Central distortion in HL concam images
I have noticed a persistant distorted area in the center of the Haleakala images, which to the untrained eye looks like some water internal to the lens. It has remained nearly the same for some time (week+?) so I don't think it is external dew. I will have a look inside on Wednesday when I plan to b...
- Mon Sep 13, 2004 10:52 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
East is east (I hope...)
We unbolted & rotated the camera this noon, and hopefully it is now oriented correctly. Also put the system on a UPS (but might have crunched a file transfer when it was shutdown - sorry).
- mfw
- mfw
- Mon Sep 13, 2004 7:28 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
moisture
That wasn't condensation, it was precipitation! Previous images show that at about 1200 UT things got pretty fuzzy - a fogbank came in, leaving things pretty wet for the rest of the evening. Since the Rh was nearly 100%, it took a long time for it to clear out. We have a page of weather, etc info wh...
- Fri Sep 10, 2004 5:44 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
yup, backwards...
The HL concam is mounted 180 degrees out - sorry about that.
I will try to get someone to rotate it today if I can, otherwise will do it on monday.
I have no idea what caused the dropout for 7 frames in the middle of the night...
- mfw
I will try to get someone to rotate it today if I can, otherwise will do it on monday.
I have no idea what caused the dropout for 7 frames in the middle of the night...
- mfw
- Thu Sep 09, 2004 6:21 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
Camera is outside, ready tonite
We have the Haleakala concam mounted outside, so tonight should get some night sky. However, based on the pictures of the office, I think its going to be rotated 180 degrees from what you expect (N = S) because of how I mounted it. I can rotate or move it if desired... BTW, on the archive page <http...
- Fri Sep 03, 2004 11:04 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
Height of HL cam
The elevation of the camera I sent Richard was actually the height above the mean ellipsoid, not true elevation (oops). The correct number is 3048 m above sea level, ~30 meters lower. (what's a few nano-light-years between astronomers?)
-- MFW
-- MFW
- Fri Sep 03, 2004 10:50 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
HLcam progress
The Haleakala camera will be mounted on the green tripod seen in these photos, taken facing more or less east and west respectively (the Big silver coffee can is the Air Force AEOS observatory, located to the NW of the concam.) The lens aperture will be about 6' off the ground when installed, so I d...
- Fri Aug 27, 2004 11:55 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
New computer here and working...
I powered it up today, works as expected but not on the summit network yet :) I emailed Robert a couple of detail questions, with those and some mechanical work I hope the camera might be on the sky late next week. For those interested, Haleakala is a Hawaiian place name, actually 4 words (Hale a ka...
- Thu Aug 19, 2004 7:26 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Haleakala (HL) CONCAM status
- Replies: 47
- Views: 46882
Haleakala concam is here....
It seems to have arrived intact, will move to summit this afternoon, but probably it will take until next week to get the mounting and cabling issues straightened out.
Will update progress as we make some![Smile :-)](./images/smilies/icon_smile.gif)
mfw
Will update progress as we make some
![Smile :-)](./images/smilies/icon_smile.gif)
mfw