Stuart1971

The laws of physics also say that to prevent condensation you need heat and ventilation, so a sealed unit may not be the answer..As it is far worse now than it was before it was totally sealed…

Orange, and it turns green when wet…it was brand new several hours ago when I put it in, use it on other things and works really well, so I know it works fine…

Well I give up then, as the desiccant was new and unopened and perfectly orange and not green as it is when saturated… I have 200g in there, and the box is sealed…and it’s far worse now with the box sealed, than it was before I sealed it and had it was vented, as then it only dewed up when it rained, now its like it all the time… I am totally out of options..🤷🏼‍♂️🤷🏼‍♂️

And here is what the unit looks like, the lid screws are outside of the lid seal.

The vents are truly sealed now trust me, I have sealed inside and out of them, the box is a water tight version with a rubber gasket seal on, and the dome is sealed to the box too, the cable inlet is also totally sealed, and there are 8 desiccant packs in there, the RPI produces a lot of heat, and there is a heater ring also in the dome area around the camera, and still this is the image from the camera and it’s not raining….☹️ The dome is soaked on the inside…

Hmmmm, when you seal it there is air sealed inside, this air will have moisture in it, and as soon as the power is on, the air warms up, then hits the dome on the inside which is cold as it has cold rain falling on it, so the warm air condenses on the inside of the dome, then drips down, re evaporates and condenses again, in a cycle… why do the holes need to be underneath and not on the lower sides..?? As long as they dont let water in…?

Ok, so sealed the unit again and as soon as I put it back outside the dome is misting up from the heat inside, so having it sealed is not the answer… I have read loads of posts about this and the consensus seems to be to have heat and ventilation, which also does not seem to work, so I am at a total loss…☹️

Yea, have tried, it was fully 100% sealed when I first built it, with desiccant and still was the same when it rained… The rain will always cool the dome, so if there is warm air inside it will always condense….right..? no idea how other people deal with this issue…🤷🏼‍♂️🤷🏼‍♂️

Well it was sealed with RPI and dew heater filling the unit and dome with heat, and was fine until it rains, which causes the dome to cool and condensation to form, from all the warm air inside, how can this be stopped during rain..? it was because if this I added the fan and extra hole on opposite side, which have grills on the outside to stop rain entering and a foam on the inside to stop bugs and such like. It actually seems a bit better with less heat inside. ie, when I disconnected the dew heater ring..🤔🤔

So a few months ago I built an AllSky camera with an RPI4 and the RPI HQ camera and all worked very well, it’s in a 125mm square sealed project box, with a dew heater ring around the lens in the dome area, but having real issues with condensation inside the dome, now I have read a few threads on here and other places about this issue and have followed some advice, bit to no avail, in fact it’s worse.. I should add that this is mainly after rain that the issue occurs, it seems fine at other times… I have added a 40mm fan on one side pulling air out of the unit, and a 40mm hole on the opposite side for air to be drawn in, to try and ventilate the unit, the RPI4 does generate quite a bit of heat, and have tried with the dome heater ring on and off, and seems better with it off, but can’t lower the heat any more as this comes from the RPI The dome area is open to re rest of the unit and not sealed off at all.. The air is obviously warm and condensing on the inside of the dome, but many others use this same set up without issue…so not sure what to try next.. Any ideas…

That’s good news…👍🏻

Link..?

As you have updated NINA and ASCOM, you will have to re select your camera from the drop down list in NINA, also best to install the QHY all in one native driver and use that in NINA, it’s better than the ASCOM version..

He used to be a regular here, @RayD he has not been on here since 2021, maybe not in the hobby anymore…🤷🏼‍♂️

Back on offer again, but not quite as low…

Yes, looks like it’s expired now….☹️

We went to Florida in 2011 and got tickets for a shuttle launch at the Kennedy space centre, but we were told that it could get delayed and it would not launch, and this was the chance we had to take, and there would be no refunds, and it was cancelled and did not go for two weeks after…it was a real shame as the me and the kids were really looking forward to it…but was a great day out all the same…So that was the closest I got to a rocket launch….

Well for anyone looking for the superb IMX533 mono sensor, check this out, works out at £400 on Amazon with the 45% off vouchers https://www.amazon.co.uk/Svbony-SV605MC-Monochrome-Astronomy-Astrophotography/dp/B0C491PNQW/ref=sr_1_10?crid=3UU485E2WXBOU&dib=eyJ2IjoiMSJ9.p3KDUHuWgHsnZ-7PgLZC4prfitxamtoZ9tcjxLGZXVnSCGnbqdy71C_EQThTXuKwXqIKSv7P7SRDeIwsDwdWXfADKQDP6ZSLpmoO_JMgAEAbNKMg0PBWPBRKaIxzMd2c82PDhCTiL1f-7MzKYpmgw1xett3gUM1Psar25FtEaVfFHWEtt1Yu1TWpwcKlCd6OV-SFICBqx0OK0cMMZBkJBHuCx4lrPpX_OnbE48U_SSg.vEF3HCdOvObY1myRDE8EYXaNxGk1a1aBBCjJAW02mK4&dib_tag=se&keywords=Svbony+cameras&qid=1710010445&sprefix=svbony+cameras+%2Caps%2C87&sr=8-10&ufe=app_do%3Aamzn1.fos.4c560c31-6601-464f-a219-d10a40a4ca65

It was not my issue, you got the wrong person…👍🏻

It’s a very budget price for a reason, buy cheap and you will buy twice..😉

Yes deffo much better now, ‘So the seller had obviously had it apart and tried to clean himself…not sure why anyone would do that 🤷🏼‍♂️

Yes agreed, this is what we have said to the OP…👍🏻

No, looks nothing like that issue, and how it presented itself…

Good decision.. Has he said he has opened the camera up and tried to clean the sensor, as it looks that way…?

Personally, if you have just bought this new of from someone, I would be sending it back, and not opening the camera up at all, it should not have been sold in this state at all…and if second hand, then you need to be having a word with the seller IMHO…