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Ntech 300(small version) x1024 ex view camera

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#51 Teabagger

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Posted 09 September 2012 - 12:00 AM

Got out with the camera tonight in very light polluted skies. mainly playing with the set up, brand new to me cg5 and first time out with ccd... with no filters whatsoever, i generally washed out the screen over 32X sense up. I just decided to take frames when my comp died and that ended my night with it. heres a snapshot I took.

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  • 5411051-m31.jpg


#52 mega256

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Posted 09 September 2012 - 03:46 AM

Yes Jim the agc vrs the brightness made a diference keep agc low and brightness under 20 and color with daylight will work

#53 James Cunningham

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Posted 09 September 2012 - 06:36 AM

Thanks. I had my brightness all the way up to 85.
Jim

#54 barbarosa

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Posted 13 September 2012 - 12:09 PM

Here are a series of images that mark waypoints on my learning curve for the LN-300. One lesson learned is that at least some settings you change in the menu will revert to the prior settings after a time unless you exist and save after each change. I did not take notes but as I get closer I will record the settings.

The images are SharpCap "snapshots" and were not post processed. CPC1100 scope and a .5x reducer on the cam.

First image.

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  • 5419166-Dum1 9_11_2012 9_56_19 PM..jpg


#55 barbarosa

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Posted 13 September 2012 - 12:12 PM

Second image.

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  • 5419172-Dum2 Capture 9_12_2012 9_52_43 PM..jpg


#56 barbarosa

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Posted 13 September 2012 - 12:13 PM

Last image. This is not the best image seen, but I changed something in the menu (small buttons compared to finger size) and lost the initial settings.

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  • 5419174-Dum3 Capture 9_12_2012 10_55_57 PM..jpg


#57 Teabagger

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Posted 13 September 2012 - 02:39 PM

I had similar results as you lastnight once it hit the meridian and it stopped tracking m27 so I switched to m57, that was much more pleasing to the eye.

#58 Teabagger

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Posted 13 September 2012 - 02:42 PM

Here is the shot of m57 from last night... so due to my success/lack of with the ntech i went and bought a mallincam xtreme today so tonight will probably be cloudly.

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  • 5419439-m57.jpg


#59 GlennLeDrew

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Posted 13 September 2012 - 03:41 PM

So far, the results from this camera suggests that, in warmer weather at least, they're somewhat useful on the brightest DSOs. In order to have a chance on objects of lower surface brightness, it will require temperatures more in the freezing domain.

Another approach is to see about getting the f/ratio down to f/2, if not faster. But this is easier said than done at larger apertures outside of something like the Hyperstar system.

#60 James Cunningham

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Posted 13 September 2012 - 04:20 PM

You will be happy with the Xtreme. I gave up on my Lyntech and sold it. The Extreme is so much nicer.
Jim

#61 mclewis1

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Posted 13 September 2012 - 04:44 PM

The Xtreme should be much nicer, it's something like 20x more expensive.

I really hope someone modifies one of these Lyntech cameras with cooling. I think that could make for a nice cheap sub 20s camera.

There's clearly a spot between these security cameras and the high end Mallincams for something that can handle 20-30s integration times and deliver reasonable images. Something that would be very well suited for use with some of the less expensive alt az goto scopes.

#62 Teabagger

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Posted 13 September 2012 - 05:34 PM

I can honestly say that I am not disappointed in the performance of ntech, its a 75 dollar camera. I dont think I could have found a 75 dollar eye piece that would have been better, than what the ntech provided..

#63 Hemmi

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Posted 13 September 2012 - 09:06 PM

The Xtreme should be much nicer, it's something like 20x more expensive.

I really hope someone modifies one of these Lyntech cameras with cooling. I think that could make for a nice cheap sub 20s camera.

There's clearly a spot between these security cameras and the high end Mallincams for something that can handle 20-30s integration times and deliver reasonable images. Something that would be very well suited for use with some of the less expensive alt az goto scopes.

I modified mine with an cold finger and TEC. I have yet to have time to build the TEC controller. I'm not sure how much difference it will even make. There are few hot pixels in my camera. Noise is more about the DSP then cooling I think. I'm sure it will help some, we will see if I ever get around to making the TEC controller.

#64 ccs_hello

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Posted 14 September 2012 - 07:19 AM

A casual and happy subject:

Remember a movie (forgot which one) that an alien civilization sent a drone to Earth trying to find "VO GER". The aliens found NASA's Voyager with its exterior being torn and few characters were forever gone....

This camera reminded me the same story. The artistic character "L" in the camera logo made people believe the camera is Ntech :). It's actually LNTECH, see
http://www.lntech.com.cn/

Oh, almost forget, ex view should be written as Exview. It's SONY's trademark.

Clear Skies!

ccs_hello

#65 barbarosa

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Posted 14 September 2012 - 12:22 PM

For this capture, I installed an f/6.3 reducer on the CPC1100, and a .5x reducer on the LN-300. EXPOSURE set to NORMAL, AGC set to OFF, SENs UP set to OFF, and other processing set to zero or OFF. LENS to ELECTRIC and SPEED set to x1024. DAY/NIGHT set to DAY.

The targets were the Dumbbell, the Ring, M13 and the Cocoon Nebula. As you would expect M13 was way too bright. The Cocoon was reccognizable but faint.

The Samsung SCB-2000 still gets the nod over the LN-300, but the gap is smaller than I first thought. Also the LN-300 has many fewer dead or stuck pixels than the Samsung.
No post processing other than to convert the image from .PNG to .JPEG. Not bad for $80.

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  • 5420948-Dumbell 2 Capture 9_14_2012 12_21_11 AM..jpg


#66 GlennLeDrew

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Posted 14 September 2012 - 03:06 PM

David,
That M27 image is more like it! The amount of sky glow suggests you have not insignificant light pollution, which helps to suppress instrumental noise. I'd be curious to see the Cocoon, if you captured it too; this will better show the capability of the camera.

#67 barbarosa

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Posted 14 September 2012 - 03:44 PM

Glenn-

Sky glow galore! Traped between the San Francisco Bay dome/wall and exessively illuminated large suburbs to the E and SE. The Milky Way is faintly visible (some nights) near the zenith.

I did not capture the Cocoon. The 7 daay forecast is for mostly clear (until the marine layer moves in)and I will try again tonight.

#68 James Cunningham

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Posted 14 September 2012 - 03:47 PM

I can't ever see the Milky Way here on the East Coast not far from Washington, D.C. and Baltimore.

#69 barbarosa

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Posted 14 September 2012 - 06:19 PM

I can't ever see the Milky Way here on the East Coast not far from Washington, D.C. and Baltimore.

Bi-costal equality at last! :bawling:

Setting aside a the issue of whether lighting the night sky is really a selfish, foolish and counter-survival trend, there might be another factor hiding the Milky Way--age related decrease in night vision, yours, mine and so very many others. :shakecane:

#70 James Cunningham

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Posted 18 September 2012 - 06:16 AM

I just got an e-mail from Jock who sells the camera and a remote control cable. He sent me some photos of the OSD cable connections. Here they are:

#71 James Cunningham

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Posted 18 September 2012 - 06:17 AM

Here is the 2nd one. She charges $10.00 for the OSD cable including shipping.

#72 barbarosa

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Posted 18 September 2012 - 11:57 AM

Further adventures with the LN-300. Setup the same- CPC1100, f/6.3 reducer/corrector, .5x reducer, and additional local light pollution from "tests" of the sports field lighting at the nearby college.

Camera settings, lens to ELECTRIC, AGC to OFF, BLI, HLI, and WDR to O. Color to Manual.

SharpCap snapshots saved as JPEG to reduce file size.

M51 (about 15 degrees Alt.). Captures of this target with a Samsung SCB-2000 are only somewhat better.

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  • 5427349-Whirlpool.jpg


#73 barbarosa

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Posted 18 September 2012 - 12:00 PM

A galaxy (one of the brighter ones, name not recorded)

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  • 5427354-Galaxy.jpg


#74 barbarosa

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Posted 18 September 2012 - 12:04 PM

Bubble Nebula

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  • 5427364-Bubble Nebula.jpg


#75 barbarosa

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Posted 18 September 2012 - 12:09 PM

Cescent Nebula

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  • 5427380-Crescent.jpg



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