Stuart1971

So as I look at the sensor from the front, the information recoded by the bottom left corner, shows in the top left when I open the image in Pixinsight….correct…?

Thanks for that, but yes I know where my sensor top is, but I don’t think I asked the initial question very well… What I wanted to know, is when looking at the sensor from the front of the camera, the photons that hit the bottom left corner of that sensor, where do they show in the subsequent image opened in PI, do they show in the same bottom left corner of the image. the scope has no bearing on the question I asked, it’s purely about what light hit which part of the sensor and how it correlates to the image on screen… Hope that makes sense….it does in my head….👍🏻

Hello, Can you you send me the link to those spacers, am after some ideally in M54 size, but M48 would work…. Thanks

I found the STL file for these if anyone wants it, they are the best I have tried as they are 2mm thick, and don’t lift around the edges when you nip the screws down, like some of the thinner ones do, the screws sit flush with the top, and they fit 2mm thick filters and fit in my QHY 7x36mm filter wheel, which is the new version 3 and 17.5mm thick…

Wow, this thread has really moved on…..😂😂

I have, on my QHY268c camera, but have moved to a filter wheel, with a new 268m mono camera, which is a bit more awkward to get on the laser Jig, so was trying to sort an even simpler way, but needed the info I asked for above, but failing that I will 3D print an adapter to hold the full imaging train with wheel….👍🏻

Yes sorry, I was getting all confused in my head and over thinking it…thanks…👍🏻

Thanks Well it makes no odds about the optics, as this is happening after that, just want to know how the image corners correspond with the sensor corners….after the image is taken, I know that the optics will do things, but that is moot really here….👍🏻

If you have bought that new, then yes I would as that is a very old stock item, where did you get that from….and what colour is the paint, if it is the old green then it’s very old, it should be the newer tak blue colour….it looks like the old green colour in the image, so it’s at least 3-4 years old, so, very old stock, I bought the FSQ85 EDX, 4 years ago, and it’s the new blue colour with the new rotator…

Yes yours is the older version, with what they call the captains wheel…they replaced it, with what was advertised as a better version of an adjuster…..not sure why, and what was wrong with the Captains wheel method….👍🏻

So here is an image of my camera sensor, now when looking at the sensor like this, from the front, would, for instance the bottom left of the sensor, correspond to what I see in one of my images when opened in Pixinsight, so bottom left of the image…. I have an issue with tilt and have been looking at images in PI with the aberration tool, and it clearly shows the bottom left corner of my images have the slight tilt….so trying to work out which corner of the sensor this corresponds too….

Correction to my first post, the shim is actually 0.1mm and had to fold a piece in half to get the 0.2 as shown in second image…👍🏻 this was enough to move the laser dot on my tilt jig back to the centre of the circle it was making, which was approx 5mm diameter…

This is how it looks, and with my mono camera I will have 2 spacers after the filter wheel and will do the same with that too… I left a little tab sticking out, not sure why really…🤔

Hi Adam, yea I have them, and tries but did not get on with them, also they add 0.4mm plus the extra tilt amount…so the backspacing was 0.5, 0.6 or 0.7mm which was too much for me as I needed a tilt adjustment on 0.2mm. They also can move when you tighten up spacers that have these between…. I have since bought some copper shim at 0.2mm and put it in the correct position between two of the spacers on my QHY camera and it works really well indeed…simple to do too…

So according to the above image that is correct….I am going with that too, it seems to make more sense to me to have the strong single reflection side towards the sky…👍🏻

Just found this, and it seems that LRGB and narrowband filters should be fitted the opposite way round to each other….this is from ZWO…they don’t make it easy…. So with LRGB the reflective side goes towards the sensor, and with Narrowband it goes toward the sky…..

Well after receiving the filters and unpacking it’s really obvious which side it the anti reflective side and which is not, as on the one side they are like a mirror, ( anti reflective side) and the other side is coloured red / purple for the Ha, SII, and blueish for the OIII, this shows a not so good reflection, so according to Optolong the coloured side goes towards the camera sensor, and the more reflective side goes towards the sky…so will try this way round…👍🏻

Check out this link, he has 4 beginner tutorials and they are very good, and he includes the data so you can follow along with him…they are very well explained and easy to follow… https://www.youtube.com/@lukomatico/videos

So you fitted with the most reflective surface towards the camera sensor….now that seems wrong to me, and after testing my 2” Optolong L-extreme and L-enhance, they are the other way round, with reflective surface towards the sky…🤔🤔 or at least that’s how they came fitted in the cell…..

So having decided to get a mono QHY268m camera, I have also bought a set of 36mm Optolong unmounted SHO filters, and have an issue, which way round should they be fitted…🤔🤔 now on the Optolong website it states that the most reflective side should go towards the sky…shown here… https://www.optolong.com/cms/document/detail/id/147.html but ZWO have stated the complete opposite here on the RVO website…this is what they have said… WHICH DIRECTION TO INSTALL THE FILTERS IN? It is a tricky question as we asked various manufacturers and most of these manufacturers think that it doesn't matter, however the manufacturer of ZWO filters advises that the coated side of the filter should face the camera sensor. Well, there is nothing to loose to follow their advice, so lets do it. Now, how to find out which side is the coated? Open the case and remove the filter from its pouch and put it on top of the puch as this is most likely the most dustfree element in your surrounding. Now hold an item, i.e. a pen above the filter, close enough, but make sure that it won't touch the filter. If you see a single reflection as if it was a mirror, that's the coated side; that side should face the camera sensor. If you see a double reflection, that side should face the telescope. so which one is correct….as the filters are the same….🤔🤔🤔

Very nicely done…👍🏻

Stunning, it’s amazing how much more detail shows up in starless versions…👏🏻👏🏻

Wow, I never looked at that, that’s cheaper than I paid, and I thought I got a good deal at £1650…😮

They deserve to stay on the shelves…it’s ridiculous TBH…😮😮

Just seen on the UK player one dealer the prices for these new IMX571 cameras….😮😮😮😮😮 https://www.starfieldoptics.co.uk/Deep-Sky-Cameras_c_29.html