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Showing results for tags 'prism'.
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Hi For various reasons, I find a correctly orientated image, (vertically & horizontally) as given by an Amici prism in a diagonal, much easier for me to use with my observing. I absolutely loved the Baader Amici prism with the ClickLock. The build quality is lovely and it gave really great views - except when you try and use it on an object brighter than about magnitude 1.5, whereupon you see the infamous diffraction spike ruining your view. I know this is a fairly common issue with prisms and with Baader Amici prisms in particular but I have also heard of people trying several and then finding one without the diffraction spike issue. Mine was bought from a reputable online only astronomy supplier on the USA west coast who assured me they tested the prism prior to my purchase but they obvioulsy did not. They did give me a refund in the end. I would really love to try and obtain another Baader prism but without the diffraction problem. My question is, have you done the process of trying several prisms before getting a good one? Who did you use? (please feel free to PM me) Did you end going directly to Baader? I would do that ordinarily but I now live in the USA, not Europe. Have you another non Baader correct orientation prism that you could recommend to me ? (Although I have to say once you use a Baader diagonal with a ClickLock there really is no going back to the fiddly adjustment screws!!!) Thanks for any advice, sharing of experiences or recommendations. Siouxsie
Hi all, I'm becoming a bit of a Moon and Planets visual observer and in consequence, I'm considering an Amici Diagonal. I have read that at high magnification your view can be obscured. That said, I have read that it is of little consequence when using a Mak and a decent diagonal like this one - https://tinyurl.com/y75z4n5v from Baader Planetarium. I'm really keen to make my East East and my West West. Any advice or experience would be welcome
This is an unusual combination. I bought a Denkmeier PowerSwitch on a 2" WO diagonal (if I remember correctly). The diagonal was not in brilliant shape, and I wanted to be able to use my Baader Zeiss T2 prism with it, so I removed the diagonal, fitted a T2 Adaptor and there you have it. PLEASE NOTE The Zeiss prism is excellent, but does have some slight damage to the coatings. On one side, an eyepiece barrel contacted the surface and left a ring which is obviously ring on the limit of a 1.25" fov. On the other, there is a slight mark. Neither of these are visible in use, or have the slightest effect on viewing quality but I need to point them out. Overall these prisms are excellent for high power viewing and seem to have the edge over even top line mirror diagonals. In my experience the image holds up better under higher power. The PowerSwitch has a reducer and multiplier selection, and is very handy. I used it a fair amount for solar observing with good success. Difficult to price. Let's say £75 for each part so £150 total collected at SGL11 or £160 posted. Note that it also includes a Baader variable extension tube which is in itself worth something. Paypal fees paid or bank transfer please. Cheers, Stu
Hello all, We've just discovered that the Bresser Skylux 70/700 that Santa brought to my daughter is missing one piece: the prism/diagonal. My husband went to the shop (supermarket) where the telescope was bought at a very convenient price (like 50% discount), but at this time we fear there will be no other telescopes left, so we'll probably have to options: - Get the refund for the telescope and save some money for another telescope, at a higher price - Stick with the telescope and buy the missing piece on eBay or Amazon... maybe we can find a better one which will improve the telescope performance? We have zero knowledge about lenses/telescopes, but my daughter is really interested in Astronomy (watching videos and reading about it all day long) and she was really excited when she got her first telescope... Could you please give some advice? Thanks!
I just don't use this one often enough to hang onto it now. In excellent condition, has End caps and I believe I have the box too but assume not. Turns your scope into a spotter scope, works very well. It is in excellent condition optically and cosmetically. I believe I have the original box but assume not, I will dig it out if I can. As standard they are supplied with a 1.25" adaptor but I don't have this any more. I am asking for £100 ono with a non standard, single set screw adaptor. Let's say £5 towards p&p. PayPal fees paid or bank transfer. Also on ABS and elsewhere. Cheers, Stu
After a lot of experimentation I have just managed to achieve focus on both my oag and Atik 383l. However I am not convinced that the image from the guide camera is orthagonal to that of the Atik even though both are square to the RA axis. I did have to chop about 5mm off the prism turret to achieve focus. Could the prism have moved? If so will it affect my guiding accuracy? How do I check how much it's off by? The prism appears to be square and flush with the turret, will removing and resetting the prism (using the small grub screw) make any difference. Any help or advice would be greatly appreciated. Thanks Dec