Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

[DIY] Astro CCD 16-bit Color 6Mpx Camera

astrophotography ccd DIY equipment imaging
  • Please log in to reply
1234 replies to this topic

#951 wasyoungonce

wasyoungonce

    Viking 1

  • -----
  • Posts: 543
  • Joined: 07 Jun 2007
  • Loc: Land Downunder

Posted 14 June 2016 - 02:48 AM

Yep that would be great karlfoxman , Farnell is same as element14 downunder.   I did a search for that mrn but element14 came up empty (although they had had other inductance in that range).  I'll wait for your spreadsheet them bug them.

 

Many thanks gents.

 

Brendan

 

edit:

**** just did a farnell (Element14) UK search....item not found!  ****!  hahaha the site edited and hid my bad words..heres a civil version  "Darn"!

 

I also have a Mouser account...FWIW.  Free shipping if over $60 order....this sounds good...RS is free for any order but **** If I need to run around for a part might as well just get them all from one spot..Mouser or Digikey.

 

edit edit:

 

I think mouser is free shipping on orders over $60, the mouser number I used was.       CDRH4D28NP-6R8NC.......

 

Hmmmm on checking of data sheets....this is not the same as the digikey mrn number and indeed the specs on this unit is not the same.  I think the digikey item is the correct one?


Edited by wasyoungonce, 14 June 2016 - 06:43 AM.


#952 Superdude68

Superdude68

    Lift Off

  • -----
  • Posts: 11
  • Joined: 11 Jun 2016
  • Loc: Runcorn, England

Posted 14 June 2016 - 11:23 AM

Has anybody have Gerber fields for the tec board and thermal controller for the cam 84 0.41 please. Hello everyone and to remove the sensor from the base I used Chemset AP 1105 epoxy stripper that only took over night and all the epoxy was completely gone..


Edited by Superdude68, 14 June 2016 - 01:50 PM.


#953 kalalaa

kalalaa

    Explorer 1

  • *****
  • Posts: 75
  • Joined: 28 Nov 2015

Posted 14 June 2016 - 11:52 AM

wasyoungonce:

I used this one:

http://www.ebay.com/...5oAAOSw-W5UtsRs

But theese i think good too:

http://www.ebay.com/...XoAAOSwgQ9V3ren

http://www.ebay.com/...ewAAOSwPcVVn2p2



#954 karlfoxman

karlfoxman

    Explorer 1

  • -----
  • Posts: 50
  • Joined: 12 Jan 2016

Posted 14 June 2016 - 01:19 PM

Wasyoungonce

 

I am using the ones I spoke about with no issues from mouser it was closest I could find and works great. I will post the two bom I used soon. Been very busy so I'm relaxing for now.



#955 karlfoxman

karlfoxman

    Explorer 1

  • -----
  • Posts: 50
  • Joined: 12 Jan 2016

Posted 14 June 2016 - 01:27 PM

Has anybody have Gerber fields for the tec board and thermal controller please. Hello everyone and to remove the sensor from the base I used Chemset AP 1105 epoxy stripper that only took over night and all the epoxy was completely gone..

I have a TEC controller/usb hub design I built but I'm still testing it. It seems to work fine now but I need to change a few things on the schematic and then the pcb. After that I will share my gerbers.


Edited by karlfoxman, 14 June 2016 - 01:27 PM.


#956 Superdude68

Superdude68

    Lift Off

  • -----
  • Posts: 11
  • Joined: 11 Jun 2016
  • Loc: Runcorn, England

Posted 14 June 2016 - 01:52 PM

Thanks I shall wait for you.



#957 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 14 June 2016 - 03:39 PM

Quick test with new ad9826 : current is below 100mA, but i must confirm

I've recovered images i had before : only vertical pattern.

I will try to post screenshots



#958 wasyoungonce

wasyoungonce

    Viking 1

  • -----
  • Posts: 543
  • Joined: 07 Jun 2007
  • Loc: Land Downunder

Posted 14 June 2016 - 06:53 PM

Wasyoungonce

 

I am using the ones I spoke about with no issues from mouser it was closest I could find and works great. I will post the two bom I used soon. Been very busy so I'm relaxing for now.

 

 

 

Many thanks gents.  I too was thinking of the TEC as well....very decent of you to share the gerbers! :grin:



#959 karlfoxman

karlfoxman

    Explorer 1

  • -----
  • Posts: 50
  • Joined: 12 Jan 2016

Posted 14 June 2016 - 11:50 PM

Mouser

 

http://www.mouser.co...ssID=dda62357fe

 

Farnell

 

https://drive.google...iew?usp=sharing

 

Hope it helps :)


  • wasyoungonce likes this

#960 flolic

flolic

    Vostok 1

  • -----
  • Posts: 117
  • Joined: 01 Oct 2007
  • Loc: Split, Croatia

Posted 15 June 2016 - 01:37 PM

Today I tested my DIY 2-stage peltier module. For the first stage, I cut TES1-12704 30x30mm module into 20mm width. On top of that I glued with thermal conductive epoxy another module, 20x15mm TEC1-2304. Both modules are connected in series.

Results (without CCD) are promising, with 8V power supply, module draw 2 amps and can easily reach 60 degrees C temperature difference. 15 watts of generated heat I can easily dissipate with my CNC milled housing.

CCD will be thermally insulated and in a Argon filled chamber. Now I am worried about thermal sinking through the CCD pins...

More tests will follow.

 

2_stage_peltier.jpg


  • gehelem likes this

#961 flolic

flolic

    Vostok 1

  • -----
  • Posts: 117
  • Joined: 01 Oct 2007
  • Loc: Split, Croatia

Posted 16 June 2016 - 02:37 AM

CCD_pelt.jpg


  • wasyoungonce likes this

#962 Charl

Charl

    Vostok 1

  • -----
  • Posts: 143
  • Joined: 08 Feb 2007
  • Loc: terra firma

Posted 16 June 2016 - 12:34 PM

I would be more worried about thermal shock!



#963 Superdude68

Superdude68

    Lift Off

  • -----
  • Posts: 11
  • Joined: 11 Jun 2016
  • Loc: Runcorn, England

Posted 16 June 2016 - 12:42 PM

Guess what I got today it's Christmas for me...IMG_20160616_183853.JPG


  • wasyoungonce, hippieua and gehelem like this

#964 hippieua

hippieua

    Vostok 1

  • *****
  • topic starter
  • Posts: 192
  • Joined: 12 Dec 2014
  • Loc: Kiev

Posted 16 June 2016 - 04:37 PM

I would be more worried about thermal shock!

 

You can raise power gradually



#965 Charl

Charl

    Vostok 1

  • -----
  • Posts: 143
  • Joined: 08 Feb 2007
  • Loc: terra firma

Posted 17 June 2016 - 12:14 AM

 

I would be more worried about thermal shock!

 

You can raise power gradually

 

 

True, but what if the TEC supply is interrupted for some reason? Put your finger on the cold side of a Peltier, cut the supply and feel how rapidly it warms up. With its fragile construction I wouldn't risk subjecting a CCD to this. Having thermal mass between the two would be a lot safer.



#966 flolic

flolic

    Vostok 1

  • -----
  • Posts: 117
  • Joined: 01 Oct 2007
  • Loc: Split, Croatia

Posted 17 June 2016 - 02:33 AM

I have almost the same configuration where peltier is in direct contact with sensor on my other DIY camera, with Kodak KAI4022 CCD. That camera survived many thermal cycles without any problem.

 

I recently disassembled cooled CCD camera from Gel Logic 4000 Pro life science imaging system, in that camera sensor is also directly coupled to 2-stage peltier module.

 

So, while I understand possible consequences of thermal stress, I don't see it as a big problem. In the worst case scenario, I will just put another sensor. I have few spares and they are cheap to buy. 


  • brucesdad13 likes this

#967 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 17 June 2016 - 12:17 PM

Ok, here are my results with different masks :

 

Mask on the  left, my image show this dark line on the left, good ! :

Left ccd
Left img

On the right my image show this (less) dark line on the right, (not so) good ! :

Right ccd
Right img

Horizontaly, well, baaaaaad, nothing :

Hor ccd
Hor img

 

Once again... any advice would be welcomed !

Gilles


Edited by gehelem, 17 June 2016 - 12:32 PM.


#968 Toups

Toups

    Ranger 4

  • -----
  • Posts: 315
  • Joined: 01 Sep 2007
  • Loc: Greater Boston Area, Massachusetts, USA

Posted 17 June 2016 - 05:04 PM

Did you try different exposures, offset and gain values?  What settings did you try? 

Do you have a histogram of values?  (You may find either the trial version of Nebulousity or the freeware ImageJ useful for this.)



#969 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 17 June 2016 - 05:30 PM

well, i'm using Nebulosity

and i've tried different parameters.

For example :

Screen Shot 06 18 16 At 12.25 AM
This one was taken with a mask on the right of the CCD

Baudrate doesn't seem to change anything
When the gain is too high, image is saturated.

btw : i've 3 different CCD, almost same results on 3.

Gilles.


Edited by gehelem, 17 June 2016 - 05:32 PM.


#970 Toups

Toups

    Ranger 4

  • -----
  • Posts: 315
  • Joined: 01 Sep 2007
  • Loc: Greater Boston Area, Massachusetts, USA

Posted 17 June 2016 - 05:49 PM

That looks promising.  Try making a quick pinhole camera.  Enclose the sensor in box with pinhole in front of the sensor.  Aim it at a light and try some exposures.  Use a piece of aluminum foil to make the pinhole.  The pinhole will act as a lens.

 

Maybe too much light with your current test?



#971 karlfoxman

karlfoxman

    Explorer 1

  • -----
  • Posts: 50
  • Joined: 12 Jan 2016

Posted 18 June 2016 - 02:14 AM

Also with no filter it's very sensitive to IR. Masking tape might not stop much if this. Looks OK to me though. You could also try a test I did. With something to protect the glass on sensor like tape add some blobs of blutac and do an image in very low light. I always kept my gain at 0.



#972 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 18 June 2016 - 07:22 AM

Also with no filter it's very sensitive to IR. Masking tape might not stop much if this. Looks OK to me though. You could also try a test I did. With something to protect the glass on sensor like tape add some blobs of blutac and do an image in very low light. I always kept my gain at 0.

thank you

A quick test gives no result (same kind of image, whatever time or gain is)

i will try with IR filter



#973 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 18 June 2016 - 07:32 AM

With IR filter  : same results  :(

Whatever i do, i always get this kind of images, with vertical paterns


Edited by gehelem, 18 June 2016 - 07:33 AM.


#974 gehelem

gehelem

    Explorer 1

  • -----
  • Posts: 71
  • Joined: 01 Mar 2016
  • Loc: France

Posted 18 June 2016 - 11:17 AM

I've changed sony IC, and guess what ???

Smile

Screen Shot 06 18 16 At 06.27 PM

YYYEEEESSSS !!!!!

(using pinhole)

 

Thank  you so much, guys, i didn't know what i was about to start 9 month ago, and alone i would have certainly gave up


Edited by gehelem, 18 June 2016 - 11:28 AM.

  • gregj888, brave_ulysses and Dave O like this

#975 karlfoxman

karlfoxman

    Explorer 1

  • -----
  • Posts: 50
  • Joined: 12 Jan 2016

Posted 18 June 2016 - 02:52 PM

Well done that's fantastic news.




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics





Also tagged with one or more of these keywords: astrophotography, ccd, DIY, equipment, imaging



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics