TS PHOTOLINE 130 mm f / 7 triplet APO - 3.7 inch RPA extension - FPL-53
We will send these telescopes free of charge in Germany.
TS PHOTOLINE 130MM SERIAL
On request from your telescope, you will receive a meaningful quality proof (test protocol with star test, Ronchi, adjustment, with individual serial number)! Please specify when ordering!Įxamples of our test protocols: Test records
TS PHOTOLINE 130MM UPDATE
So I've ordered some M50x1 adapters to convert to M48x0.75 so I can go 2" extension and still thread a sub-aperture DERF on if wanted and will update when I get the parts and have it positioned correctly.This telescope is inspected, measured and adjusted if necessary. I also confirmed that the threading on the Lunt 60 modular is M50x1 as my PST gold tube threads directly to it nicely. Oversight on my part because it was "working" and so I left it and it clouded up and I never got back to it. Noting the above, the etalon is totally in the wrong location in the optical pathway (mine that is).
Costs more, but its a big etalon for a bigger sweet spot on bigger aperture longer scope options.
TS PHOTOLINE 130MM FULL
Dead simple! The Lunt 60 for me was about getting a full disc scope and having the little 70mm F6 ED frac it comes with as a base for other things too and the crayford can't stand helical.Įven better than these would be a Lunt 80mm DS II unit, with adapters to mount. That said, I'd suggest the Lunt 50 for the simplicity as shown in this thread above with ready off the shelf adapter rings and 2" gear insertion. So will need more work to get it modded like this. The Lunt 60 will require some custom stuff since nothing is threaded, its all insert & thumb bolt on modular series. I would MUCH rather get this sorted to use standard focusers with 2" and use a 2" insert to make this work, instead of the plate adapter, to ensure everything is orthogonal to the light cone. I am planning to measure the temperature of the light coming out of the etalon next time I get a chance, but I cannot measure the temperature inside the telescope since I do not have a full aperture ERF on it.Ģ0210817_192123.jpg (3.93 MiB) Viewed 1311 times The same people suggests that it will be safer to use a 2" Baader 3.5nm H-alpha pass filter as an ERF in front of the etalon.īefore I go out and spend a lot of money on this filter I just want to check if any of you have any comments regarding this? The argument is that the full visible spectrum still builds up a lot of heat that might damage the etalon. However, some people think that I am mad to use just a 2" UV/IR cut filter in front of the Lunt 50 etalon. Using the method descibed in the post I found that 53mm is the perfect distance on the TS-Optics Photoline 130mm refractor. You can measure it precisely with a camera see the first post in this thread. How do I calculate the perfect distance needed between the lens of a telescope and the beginning of the Lunt etalon?Īny other suggestions and advices are welcome. I saw a lot of h-alpha detail in the chromosphere and eveything seems to work fine. A small adjustment on the helical focuser and I got a crisp and clear view of the sun in my TeleVue 25mm eyepiece. With the extender removed I had 51mm on the telescope focuser distance and put in the Lunt etalon with UV/IR cut filter and B600 blocking filter into the focuser. One good thing about this scope is that I can remove a 90mm tube extender to get a total of 213mm working distance. My telescope is a TS-Optics Photoline 130 mm f/7 FPL53 Triplet APO Refractor.
TS PHOTOLINE 130MM MOD
I am planning to buy a full aperture ERF when I know what telescope I am going to use as a Lunt 50 mod scope going forward (just to be safe). I have a Lunt Solar Telescope LS50THa with B600 blocking filter so I bought the adapters listed in the link above and screwed a 2" UV/IR cut filter into the nosepiece (this acts as an internal ERF before the etalon). I was inspired by this blog post ( link) and after reading a lot about Lunt mods here on SolarChat and on other astronomy forums I decided to try it out on my 130mm f/7 refractor.
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