#1  
Old 18-10-2012, 05:43 PM
tilbrook@rbe.ne's Avatar
tilbrook@rbe.ne (Justin Tilbrook)
JHT

tilbrook@rbe.ne is offline
 
Join Date: Jun 2007
Location: Penwortham
Posts: 3,039
Orion cooler box test.

Hi,
Finally had a few nights suitable for more testing of the Orion cooler box.
First the images.
They were taken on two nights, 17/10 and 18/10 both single 8 minute subs at ISO 800, I would have preferred to do it on one night but it was getting too cold, dipping below 10 Celsius outside temp.
The image marked cooled was 17/10, running at an average temp zero Celsius, with the orion cooler.
The image marked no cooling was 18/10, ambient temp 14 Celsius.
As you can see the cooler was doing the job.
The scope pics, show how I balanced out the cooler, with the finder and auto guider mounted directly opposite the focuser. This is not neutral balance, it's biased toward the cooler but it has certainly fixed the balance problem. Of course more weight was required on the R.A. arm , just over 2 kgs and I needed to move the OTA back in the cradle to centre the balance.
You can see from the PHD graph that it was running quite well.
The cooler.
There is no way it will run up to 24C below ambient as stated on Orions web site!
It may do so if there was no camera in it, the best I could do was 15c below ambient. Ive been checking out other reviews and from what I can see this is the norm. While 15c is useful, it's not what I was expecting.
Ease of use.
Well no, it's not easy to use!
It's cumbersome, a pain to feed the cables through and the 4 plastic screws that hold it together are just a dumb idea. Why didn't they use a hinge and locking clasp!!
So while it does the job, it doesn't live up to the sales blurb and could use some serious redesigning.
You may ask, why the hell did you buy it!
Well I'm not at the stage where I want a real CCD and I don't want to modify my canon 1100D, also sick of building my own stuff and wanted off the shelf.
Cheers,
Justin.
Attached Thumbnails
Click for full-size image (M77cooled.jpg)
213.9 KB84 views
Click for full-size image (M77notcooled.jpg)
217.9 KB86 views
Click for full-size image (finderguider.jpg)
177.5 KB78 views
Click for full-size image (coolertest.jpg)
173.5 KB77 views
Click for full-size image (cooler2.jpg)
196.4 KB87 views
Reply With Quote
  #2  
Old 24-10-2012, 04:23 PM
astrospotter (Mark)
Registered User

astrospotter is offline
 
Join Date: Jan 2010
Location: San Jose, CA, USA
Posts: 146
Thanks for the review. It answers questions I had and more.
it is key that you found the limit is about -15C below ambient and not -24C.
These DSLRS put out heat so they may not have tested with a camera which of course is rather misleading as that is the point of such a box.
Reply With Quote
  #3  
Old 24-10-2012, 04:57 PM
tilbrook@rbe.ne's Avatar
tilbrook@rbe.ne (Justin Tilbrook)
JHT

tilbrook@rbe.ne is offline
 
Join Date: Jun 2007
Location: Penwortham
Posts: 3,039
Quote:
Originally Posted by astrospotter View Post
Thanks for the review. It answers questions I had and more.
it is key that you found the limit is about -15C below ambient and not -24C.
These DSLRS put out heat so they may not have tested with a camera which of course is rather misleading as that is the point of such a box.
Thanks Mark!

Yes misleading for sure, I have found another issue, it seems to cool less once the temp gets higher. I've done several runs with the oustide temp at 18C and it's only cooling 10c below that after one hour.
It's an issue i've taken up with BINTEL the company i purchased it from.
They are contacting Orion for some answers, hopefully have them soon.

Cheers,

Justin.
Reply With Quote
  #4  
Old 24-10-2012, 08:09 PM
tlgerdes's Avatar
tlgerdes (Trevor)
Love the moonless nights!

tlgerdes is offline
 
Join Date: Mar 2009
Location: Sydney
Posts: 2,280
In your opening message I think you have hit on the problem..

"lowers the temperature inside the sealed chamber up to -43F (-24C) from ambient"

The "up to" factor is their get out of jail free card, they can say your camera is too big or too hot and they reached those figures with something smaller. Bintel will do the right thing by you though.
Reply With Quote
  #5  
Old 29-10-2012, 01:34 PM
alistairsam's Avatar
alistairsam
Registered User

alistairsam is offline
 
Join Date: Nov 2009
Location: Box Hill North, Vic
Posts: 1,817
Hi Justin,

Do you have dark frame comparisons with and without the cooler box?

Cheers
Reply With Quote
  #6  
Old 30-10-2012, 04:43 PM
tilbrook@rbe.ne's Avatar
tilbrook@rbe.ne (Justin Tilbrook)
JHT

tilbrook@rbe.ne is offline
 
Join Date: Jun 2007
Location: Penwortham
Posts: 3,039
Quote:
Originally Posted by alistairsam View Post
Hi Justin,

Do you have dark frame comparisons with and without the cooler box?

Cheers
Hi Alistair,

No, I would like to some test darks but there's something wrong with the cooler. It's cooling less every time i use it, still witing for an answer on this from BINTEL.

Cheers,

Justin.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 11:28 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
SkyWatcher Australia
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
Meade Australia
Advertisement
Celestron Australia
Advertisement
NexDome Observatories
Advertisement
Astronomy and Electronics Centre
Advertisement