
DIY Intensified IIT setup for around $200 project.
#251
Posted 31 March 2014 - 10:42 PM
I'm so glad I bought the 8079HP. It's rejuvenated me looking up. I got so tired not quit seeing the glubulars.
And now being able to see nebulas also is icing on the cake!
De Lorme
#252
Posted 31 March 2014 - 11:52 PM
If so how much better{or worse}than your Celestron UHC/LPR
filter? Thanks for the info. I found a web site called
"Astronomical Filter Curves". It's been very helpful.
De Lorme
#253
Posted 01 April 2014 - 06:16 AM
Did you mean this site,
http://www.astrosurf...ters/curves.htm
or something else?
#254
Posted 01 April 2014 - 06:22 AM
I finally got some decent shots thru this device
I wish to thank c7jhawk and De Lorme for heads up on this
one - I was raised that gen 1 was useless
not in this case!
http://www.cloudynig...6440546/page...
Those are great shots, Barnards Loop is very impressive. How does this intensifier compare with gen 3 you have used?
#255
Posted 01 April 2014 - 06:58 AM
G3 has less distortion(flatter field) and less weight
g3 picks up a bit more of fainter stuff
g1 has brighter image and less noise but only zone 1 is good for astronomy zone 3 real bad
I think i got a way to design an eyepiece to get rid of most distortion -- future work
when you consider its 1/10 price of a used g3 very well indeed. Very funny a good 2 inch H-a filter will cost same or more that tube itself!
#256
Posted 01 April 2014 - 07:23 AM
#257
Posted 01 April 2014 - 10:29 AM
i only have the little 1.25 inch model
not well suited for this big beasty tube
I can try to see what it does once I mount on DOB
#258
Posted 03 April 2014 - 10:24 AM
That's interesting, what did you have in mind?
I've found that the high mag of 26mm plossl (only about 70-80% of intensifier screen fits in plossl fov) also magnifies the background noise "dots" which can be seen individually. Not a problem with bright objects, but the fainter the target the more difficult to distinguish the noise-dots from the target. The solution with faint objects is to use the lower mag of a loupe (all the intensifier screen only fills about 70% of the 5x loupe fov) so that background becomes uniform grey-green instead of individual dots.
So was thinking an ideal solution might be some sort of zoom eyepiece, then you could tailor the mag to brightness of each object, as each target is different.
The only zoom loupe I could find is this one,
http://www.bhphotovi...x_Zoom_Loupe...
which is expensive. Does anyone know any other zoom eyepiece which could be used for this purpose? (And if it flattens field distortion as well even better!)
I do have 3 different mags now (26 plossl plus a 10x and 5x loupe) which are probably enough for most situations, but a zoom would be more convenient and more flexible.
#259
Posted 03 April 2014 - 10:35 AM
i got a shot at home ill post later
yes I use lower power loupes - noise not as obvious
#261
Posted 04 April 2014 - 03:38 AM
The 10x loupe (#1983) is really good and was at one time used by STANO Components on a number of their MX-9916 based night vision scopes.
I can't comment on their zoom loupe's but the 10x mentioned above is outstanding, for a loupe that is.
Here are a couple pictures of the ones I owned that use the Peak Loupe:


#262
Posted 17 April 2014 - 04:05 AM
Would the Tec12706 work and if so what heat sink would go with it? Thanks for the help, De Lorme
#263
Posted 18 April 2014 - 05:48 AM
You can pump it up with momentary
off switch added to line
#264
Posted 16 May 2014 - 04:31 PM
#265
Posted 16 May 2014 - 10:33 PM
What kind of telescope and mount would you be putting it on? De Lorme
#266
Posted 17 May 2014 - 05:57 AM
#267
Posted 17 May 2014 - 06:04 AM
link is somewhere in this thread early on
#268
Posted 17 May 2014 - 06:21 AM
I have an ABS plastic housing scope for 25mm format tubes and they are sturdy. I use it hand held a lot. It has the c-mount adapter and I use a nifty fifty canon lens or a Pentax 200mm lens with it. It has a 1/4-20 bolt mount to attach to photo tripod if I want.
I imagine you could build similar with p8079hp tube for $200 and come out with a very nice handheld or photo tripod mountable scope.
This is the ABS housing for 25mm tubes with Canon 50mm lens on it. Yellow cap on jewelers loupe eyepiece protecting it from dust, but similar to jewelers loupe posted. That is a c-mount to Canon efs adapter used to attach the nifty fifty:

#269
Posted 17 May 2014 - 06:51 AM
#270
Posted 17 May 2014 - 07:07 AM
I don't know of any correcters for the edge aberrations on the gen 1 cascade. Maybe some one else here does.
Size is shorter than gen 1 cascade, but it still is 25mm format. That one fits gen 2+ or gen 3 PVS-4 type tubes. Currently a gen 3 in there now.
#271
Posted 17 May 2014 - 07:26 AM
http://www.anchorsup...generation.html
This forum has a lot of information about building a night vision version,
http://www.ar15.com/...t=359614&page=1
#272
Posted 19 May 2014 - 07:26 AM
http://www.ebay.com/...-Device-/141...
#273
Posted 19 May 2014 - 04:31 PM
#274
Posted 19 May 2014 - 11:19 PM
The EE VC P8079HP is 55 GBP versus the Varo MX 7854A/UV at 64 GBP, at the moment.
Regards,
Alistair G.
#275
Posted 26 July 2014 - 06:51 AM
Back to main topic of this thread. If you could own only one hydrogen narrowband which would it be, for intensifier but also for visual viewing? In other words which would be the most versatile for both types of viewing and also for showing the most number of objects?
Thanks for any suggestions.