Oddity in m8 lagoon nebula
Posted 07 July 2013 - 04:50 PM
So, before I get too side tracked I turned to take a picture of antares, but on the way Facing south, I had the lagoon nebula out there. And while showing her the challenge of cloudy nebula this light, Ihave no idea what it is, started to show up She knows how to set the file to start and hit the right buttons to record, (had just shown her a few objects ago) So She said we should get this. I said heck yeah and we started rolling. Now as far as light goes, we had made smores on a fire and it was starting to die out. the fire had no affect on any other filming the entire night. If I were to move the scope in the direction of the upper corner the direction I would have had to move it would be up and to the left. I rule out northern lights because I am so far south, in northern Nevada, and this faces south. When the lights came back on, o rule out the fire I stood between myself and the scope and made sure my hat covered the side of the opening. I have nothing reflective in the yard, and the fire was about 100-110 degrees off the front of the scope. we both looked in the night sky and it was clear thought it might be a flash light or something but there was nothing, slight breeze to moderate at times, from our town, south of us is nothing but hilly desert for miles, nearest town is about a 45 min drive through the hills and its smaller than mine. Clear and cloudless sky. I didn't know who else to ask except you guys. Any idea what the heck this is? What did I get on the video I was a bit creeped out and dumbfounded.
we started recording and it went away for another minute. It starts up again at about the 1:20ish mark. I only had to stop because the file was getting huge.
Posted 07 July 2013 - 06:42 PM
Posted 07 July 2013 - 07:01 PM
Posted 07 July 2013 - 07:15 PM
I went forward in the video, (I didn't record for the 3:50 its showing, just did lots of frames for good pictures. but you can see the light source gets brighter in the video. which in that direction of the light source, it would be above the scope and to the left.
Posted 08 July 2013 - 12:12 AM
Posted 08 July 2013 - 08:24 AM
Posted 08 July 2013 - 09:59 AM
Could it be an iridium flare from a satellite passing nearby?
It lasted too long (a few minutes) for an Iridium flare. And while this was seen via the camera, nothing was apparent when looking about for the offending source. Therin lies the mystery.
I'm now really wondering if the fire isn't the culprit after all, in spite of it being more than 90 degrees from the scope's line of sight. Any chance for a light leak, perhaps?
Posted 08 July 2013 - 09:28 PM
I do know when I have the thing cranked like it does, it keeps the electronic shutter or what ever it is open for a few seconds. I I know I didn't record for over 3 min. it was no more than 90 something seconds or so. The fire was on a bit higher when I did this image which is if I slewed to the right of the scope.
Would a flair have happened twice? it faded out when we got it started to record.
Posted 08 July 2013 - 09:32 PM
Posted 08 July 2013 - 10:01 PM
Posted 09 July 2013 - 08:31 AM
Perhaps a reflection of the fire off something else?
as another note I stood in between my scope and the remnants of the fire and used my hat to shield the side to block it out, fire was my first though, but it remained
Posted 09 July 2013 - 03:47 PM
Posted 12 July 2013 - 11:44 PM
In this case, the light is clearly radiating from somewhere off to the side, and it is way too bright to be extra-terrestial.
Posted 13 July 2013 - 07:10 AM
Posted 13 July 2013 - 05:55 PM
2) It's transitory and repetitive--it dies out and comes back several times. That rules out an iridium flash or a meteor.
3) It has the look of a planet or perhaps crescent moon outside the field of view. Saturn was nowhere close. July 6th, evening, the Moon was a tiny crescent west of the sun at sunrise, so it wasn't the Moon.
4) There isn't anything really bright in the sky for many degrees from M8, so it wasn't the glare of a star just outside the field.
5) some possibilities:
--sparks from the fire, drifting near the field of view and causing an out-of-field light source due to imperfect baffling and flocking in the scope
--airplanes going across the field whose light entered the bottom of the focuser from over the top of the opposite side of the tube. The planes could have been 90 degrees off angle and caused this.
--the light on a distant tower that blinks on and off. It could be at nearly any angle and cause the glare (see previous item)
--Antares entering the telescope from over the end of the tube opposit the focuser (if the focuser bottom faces that way, as in a Chinese-made dob).
This likely is not the culprit, since it would not have been intermittent, but constant.
6) Try repeating the experiment, only this time block any light from entering the focuser by holding up a shield opposite the focuser, over the end of the tube for a while. Or add a cardboard light shield to extend the tube forward a foot. If that eliminates the issue, you know what it is.
7) look into the tube and blacken any screws or things that appear non-black, like collimation screws or focuser screws, etc.
8) shine a flashlight perpendicular to the tube at the inside of the tube opposite the focuser. Or try the same thing directly into the focuser.
9) look for a beacon light anywhere in the sky, from 90 degrees left to 90 degrees right of the scope. Block any light from any beacon you see.
10) look for planes, especially if you're in a landing path for an airport.
Where I observe, the western sky has one plane a minute nearly all night.
11) look to see if there are any shiny surfaces in your camera attachments and flat blacken them if there are.
12) let us know what happens.
Posted 15 July 2013 - 05:22 PM
Street light, we have 6 in the entire town.
flashlight, possible, but again we looked in that direction, didn't see anything. What ever it was was definatly not a celestial body.
My thought initially was that it was a low flying private plane miles away out of our visual range and the fact the sensativity was cranked up thoguth maybe we cuaght the side of it. Again I'm not hunting big foot here, just thought it might have been some odd ball luck thing like a plane
Again milessouth is desert, a few hill people live tehre but most of them are scattered. The lack of people, and habitation gives me my amazing skies. The only affect the fire had all night was any object we hunted above it created enough heat to mess with the images.
the reason I thought maybe it was a plane or a helicopter is about 2-300 miles away sw of our location in the pine mountains there is a forrest fire. It is possible that there was a helicopter or a plane flying say towards us and or away from us adn tmaybe I caught the light from the plane? I dunno a plane never looked liek that when I saw them fly though my scope before. It was just so bright.
Posted 17 July 2013 - 12:55 PM
It would be instructive to remove accessories and peer up into the rear opening from off axis. Can any direct view of the scene beyond be seen through a crescent-shaped gap formed by the primary baffle's innermost opening and the secondary baffle's visible edge? Even though such direct light may fall outside the field if view, this light can scatter off various and sundry inside surfaces not too far ahead of the focus.
Posted 17 July 2013 - 10:15 PM
Posted 18 July 2013 - 06:20 AM