Good morning everyone. I am Attila Dézsi from Hungary. I only registered for the forum yesterday, but I have been reading it for months. I would like to introduce the conversion of the telescope and say thank you at the same time. Because I got a lot of ideas and help from this group. The telescope is a blue tube SkyWatcher 120/1000. Internal 90mm Baader D-ERF. I made a 2 "adapter for the Lunt etalon so it can be inserted into any 2" focuser. I later cut the tube shorter so I have focus with a binocular viewer and 20mm eyepieces. This is how I use it most often. Photographically, I use an ASI290mm camera. I am very pleased with the result. Whenever I have free time, I use it. So thank you again
Here are some photos
120/1000 Lunt LS50 mod
- AtiCelestron
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120/1000 Lunt LS50 mod
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- AtiCelestron
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Re: 120/1000 Lunt LS50 mod
Thank You GUS.
My main instrument is an old C8 that I use for Moon observation and with Baader solar foil to observe Sunspots. The mount is a HEQ5 pro goto. I tilted the internal ERF 2 degrees, one of the pictures shows the reflected light on the front lens. I designed a heating module for the block filter, the power of which can be controlled from an energy distribution box. I will be testing the heating module now in the winter. There are also plans to make a scintillation monitor.
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- marktownley
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Re: 120/1000 Lunt LS50 mod
Welcome to the forum! That's a pretty neat mod you've got there!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- AtiCelestron
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Re: 120/1000 Lunt LS50 mod
I was afraid of work. I have no knowledge of optical things. especially not with h-alpha. but I am very pleased with the end result. I just don't like the "sweet-spot". when viewed with binoculars, I see the full disk, but the size of the sweet spot is smaller than the full disk. so I have to move the image of the Sun in the field of view to see the eruptions on the edge. photographically I use an ASI290MM. it is out of frequency in 1/4 of its field of view. probably the wide sensor sticks out of the sweetspot
Re: 120/1000 Lunt LS50 mod
helloAtiCelestron wrote: ↑Tue Sep 28, 2021 6:57 amThank You GUS.
My main instrument is an old C8 that I use for Moon observation and with Baader solar foil to observe Sunspots. The mount is a HEQ5 pro goto. I tilted the internal ERF 2 degrees, one of the pictures shows the reflected light on the front lens. I designed a heating module for the block filter, the power of which can be controlled from an energy distribution box. I will be testing the heating module now in the winter. There are also plans to make a scintillation monitor.
i have some question,
what is lunt 50mm etalon thread mm?
mean i want remove focuser like you,
my telescope backfocus is 150mm, so I want to make a shorter optical path.
so want make adopter but i dont know information, so please.
- GreatAttractor
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Re: 120/1000 Lunt LS50 mod
I'm assuming you mean the whole etalon assembly. Objective side: M68x1, focuser side: M35x0.5.
- MalVeauX
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Re: 120/1000 Lunt LS50 mod
Great mod Attila! That worked out quite well. Nice that it didn't require any major reconstruction too!
Very best,
Very best,