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Post by Deleted on Jul 16, 2014 7:47:25 GMT
Hi, This is part of the previous post with an explanation of how I plan to use these cameras and lenses. I am waiting for a moonless, cloudless night to take some test shots with these two camera/lens combinations. As most of us are aware, we have been covered in a UK type broad cloud cover past day or three, plus a Moon high in the sky is not helped. AstroTrac mounted on a simple home built steel pier. The AT is an autoguide unit. I remade the finder scope which now has a 20mm Dia in place of the tiny 10mm objective, reticule adjustment screws, and a locking ring to prevent the finder scope falling off the unit, early Mathers mods. A simple pair of home made alloy brackets (one I anodised yellow/gold to try out the colour) hold the camera's with their lenses firmly to a big ball & socket head attached to the AT unit. Just a 3/4 view. Front view, note the 4 metre dome is in the background higher up the slope. A Pentax Takumar 28mm f/2.8 manual lens on the ASI mono camera, and Nikkor 85mm f/1.4 manual lens of the ASI 120MC-S camera. A 50 litre storage container ($10) acts as a light shield and weather protection when in use. Only two USB ports on this ASUS laptop, but both are USB 3.0 Clear skies... Shevill
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Post by davy on Jul 18, 2014 23:01:09 GMT
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Post by Deleted on Jul 18, 2014 23:09:43 GMT
hi shevill,,check this out... dunlap.utoronto.ca/instrumentation/dragonfly/ Hi Davy,
I could match that and add two more if I used my Nikon's D50, D100, D200, D300, D700FX, D600FX, and Canon's 350D(Peltier cooled CMOS & Filter mod) , 450D (Filter Mod), 7D and the one on the way the Monochrome 1100D.
Clear skies... Shevill
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Post by davy on Jul 18, 2014 23:12:37 GMT
when I saw it tonight it reminded me of your set up lol
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Post by davy on Jul 18, 2014 23:17:00 GMT
iwas thinking earlier this year when I got my four channel dvr it would be quite an experiment to try three video cameras on my rig one on my ed80 one with a 2-8mm lens and one with a 60mm lens and try ..intrested in what the difference would be ..and could the images be combined in some way
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Post by Deleted on Jul 18, 2014 23:42:07 GMT
iwas thinking earlier this year when I got my four channel dvr it would be quite an experiment to try three video cameras on my rig one on my ed80 one with a 2-8mm lens and one with a 60mm lens and try ..intrested in what the difference would be ..and could the images be combined in some way Hi Davy, Among my collection of video recording and editing equipment from the 80's, 90's, I have a multi-camera feed mixer with various output options. I have used it for giving groups a wide view from one camera/scope with an enlarged view from another camera/scope at higher mag. Some of the old analogue video gear is quite handy at times. I still have a Sony video printer, feed live video in, capture a frame into memory then print out thermal prints as long as you want. Good also for events where public would like a take away image of what they have seen.
A more recent purchase has been a DVR recording unit with TV screen, works from 12 Volts DC with inbuilt hard drive. I keep it packed with my Mallincam Hyper Plus with a fast zoom lens ready for video recording auroral displays. Some neat gear direct from China at a good price.
Amazing just how flexible video is for display and outreach because large groups can see the same thing at the same time. I often set up a video projector and screen to give a giant view. I can also transmit a decent picture via a TV transmitter.receiver into a lecture room for the oldies who find it too cold outdoors. The TX outfit did cost me a lot of money years ago and a HAM license to use it! because of its power output. Fun all the way.
Clear skies... Shevill
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Post by davy on Jul 19, 2014 0:01:15 GMT
Singing from the same hymn book .I have the four channel d1 dvr with a 1.5tb hard drive for further expansion in video recording
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Post by johnno on Jul 19, 2014 0:06:42 GMT
Shevill you mentioned Amateur radio, is it possible to send video over the airwaves without using expensive professional gear, it would most likely be in the hf range.
Back in the 90's i use to do SSTV but never used it since, just wondering if it has progressed since then with modern technology into video
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Post by Deleted on Jul 19, 2014 20:56:01 GMT
Shevill you mentioned Amateur radio, is it possible to send video over the airwaves without using expensive professional gear, it would most likely be in the hf range. Back in the 90's i use to do SSTV but never used it since, just wondering if it has progressed since then with modern technology into video Hi, I have been into R/C model aircraft most of my life, since 18 anyway and started with a one valve Tx and a 2 valve RX and these were fairly big before I moved to the mini valves then onward's from there. Among my many interests is aerial photography and scientific data collection for climatology studies all from R/C aircraft. To Tx the data to the ground I started building my own equipment from kits sold in the USA 1990's era, then moved on to some ready built gear that cost me $US 3,000. transmits video & sound. Since then it has all become cheap and easy with the advent of quadcopters etc, so I have some mini gear now as well for the quadcopters I am building. to do aerial photography with. I will have to update this album.picasaweb.google.com/109921669020426367250/RCSkyCamAircraft?authuser=0&feat=directlink Sky-Cam images sample.I have flown this aircraft to 1.3 km in height by eye. Height recorder by instruments on board. Clear skies...
Shevill
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