Fieldsy

8 minutes ago, Dan13 said:

I have an ankle weight on the back end on the opposite side to the cam. Does wonders 

I have a ankle weight wrapped around the back so that it isn't so front heavy ,but I like the idea of counter weighting the camera, filter wheel will try that.

How do you have your scopes rotated so the camera sits on top ,hangs on the side,or hangs underneath?

Thanks

Hi so the 12v as working but I dont think the sink and fan can get rid of heat quick enough it is blowing heat but camera temp not cooling , so new bigger sink and combined fan turning up tomorrow .

38 minutes ago, Anthony1979 said:

How much is this 

£72 per year  rent

£180 own I think

Hi all

Just a quick vote

1,PS @£30 month 😲

2,gimp free

3,Pixinsight £230

Thanks

27 minutes ago, CCD-Freak said:

So you are trying to cool it just enough to regulate the temperature to make calibration easier? 

I was re-packaging a Meade DSI-pro II to provide regulated set point cooling.  The finished camera cooled to 35°C below ambient air temp.  I usually ran the camera at -15°C
Sealing the camera to prevent condensation on the sensor was a bit difficult but I did get it to work.

 

John Love
CCD-Freak
WD5IKX

M27 Single 600 second sub at -15°C

Yeah I dont want to have worry about condensation , I have rewired to take my 12v plug so will see how it handles it without sensor atm although i do have one if required . With my eq5 pro mount anything over 120 sec subs produces egg shaped stars and with the small pixel 178mm its prob never going to get any better .

1 hour ago, CCD-Freak said:

What are you doing about condensation when the camera gets down to the dew point?  Trying to seal the housing, connector openings etc can be a real pain. 

John Love
CCD-Freak
WD5IKX

Wheres the camera ? I'm trying to get around 2 degrees .

1 hour ago, Gina said:

Haven't considered running a Peltier TEC off a battery (other than something like a car/caravan battery).  I have cooled the astro camera in my ASC - an ASI178MC, using a good quality Peltier TEC - Peltier Module, 54.6W, 4.4A, 20V, 40 x 40mm.  Running this off my 13.8v main observatory supply and using water cooling of the hot side, I can get the camera temperature down to -12°C with an ambient temperature of 15°C.  The TEC draws around 2.5A.

Yeah looks like I'm resorting to a 12v 3 amp plug ,using a small fan trying to keep the weight down as dont want to start tilting ,haven't connected controler yet not sure where to put sensor probe .

The 7.4v battery couldn’t cool below 17 degrees (Ambient) so  I will have to wait until I get the 12v power supply sorted And a bracket and larger sink fitted .😩 this Astrophotography def test your patience.

Hi all

My normal image train

Camera,1.25 efw, coma c,scope

So I purchased 2" optolong moon,skyglow to LP all filters (lrgb) but I could not get focus with B mask and wouldn't plate solve even with close focus the display on tablet for asiair was very grainy .have taken filter out now and plate solved and B mask no probs any idea why I wouldn't work?

Thanks oh I screwed filter into cc .

Bad news battery just died at 2 hrs 😔 went out to start setting up a noticed it has died on me so now recharge battery and as there is a haze in the sky atm not to bothered .

I'm having a few issues with this target myself data ql not being that good, apparently it's not a easy target.

3 minutes ago, Bobby1970 said:

Can do I guess, but I'm sure it will. Interested in the dimensions of the heatsink and fan tbh. 

I have a bigger fan and heat sink but want to keep weight down.

21 minutes ago, Bobby1970 said:

I'd be interested to know which fan, heatsink and peltier unit you used. And where you got it from?? If you don't mind sharing. 

U want me to see if it works first lol

Low voltage battery only 7.4v so not running at max .I do have a control unit but will prob only use if needed (12v) i tried it last night and it only took camera temp down to 11.6 degrees that was 5 below ambient.  But going to image tonight and just see how it goes .🤞🏻 If it goes well then a good tidy up and lagging will be next.

1 hour ago, Fieldsy said:

🤩

Double stacking filters tonight 🤞🏻

A double whammy 🥳

Hi Tony

🤩

Double stacking filters tonight 🤞🏻

Well using that heat sink and fan with a 7.4v nimh battery that I found in my old rc car box it takes it 5degrees below Ambient on testing ,so all connected and charged for first night testing while imaging 🤞🏻 nothing goes wrong

18 hours ago, vlaiv said:

I would use 2" LPS filter and I would put it in front of CC, so it would be:

camera, FW, CC, LPS filter, scope

Hi I've just ordered the optolong 2" moon and skyglow as it's the only one I've found with ar coating (fairly cheap) what do u think any good.

Si

1 hour ago, Adam J said:

I am going to guess that heat sink will be too small but it really depends on how many watts that peltier is. A water block is a better bet, unless your going to enginear it like tomato above. Too heavy is a problem too as it will cause tilt...its a small sensor mind you.

Have a larger heat sink now.

Hi all

If using lrgb filters in a filter wheel 1.25 would it be advisable to use a LP filter in the image train and where would I put it ? I presume it would need to be a 2"

Camera,filter wheel,coma c,scope where would it sit?

Many thanks

Hi all if u have a great night shooting with total error @0.8  how can the next night same target nothing changed can I be getting 1.8 total error ?

Hi has anyone had any experience with this filter?, having one in filter wheel would be a lot easier .

Thanks

Hi all

the 178mm has pretty small pixels and when my subs are 100 secs the stars round but when I go to +120 sec subs the stars elongate a little. so if I binned 2x2 that would make the cam a little less sensitive therefore I could increase expo time and keep rounds stars . Is that right ?

Thanks