150mm refractor+Lunt50
- Aleksey Polyakov
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150mm refractor+Lunt50
Hi all! I want to share with you a successful modification, the heart of which is the Lunt50. I used the refractor Explorer Scientific 150/988. To accurately set the axis, a focuser adjustment mechanism was made. For the ERF, I used a combination of filters: UHC-Svbony 2" + Standard Lunt 50 + Ha 12nm Astronomik. All filters have a slight slope to avoid glare. Such a number of filters work very effectively, the hand feels very little heat in the main focus. Not all work has been completed, but a start has been made, the first light has taken place! Peace to your home!
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- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
Some images of the new telescope
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- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
Some images of the new telescope
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- Petrus
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Re: 150mm refractor+Lunt50
Nice mod!
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LS80THa DSII - Calcium II K module 12mm - Lunt Herschel wedge 1.25" - Quark Chromosphere - Solarscout Quark - Sol'Ex
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Re: 150mm refractor+Lunt50
Just so I'm clear, the UHC isn't doing anything for your contrast in this context, but is one layer in your energy rejection, correct?
Nice images, by the way.
Nice images, by the way.
https://luntsolarsystems.com/ref/RA/
Please tell Lunt that RA sent you.
Please tell Lunt that RA sent you.
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Re: 150mm refractor+Lunt50
Very good Aleksey! Longer term I would really suggest additional energy rejection, or at the very least mounting the existing filters higher up the tube.
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- OlegLviv
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Re: 150mm refractor+Lunt50
Very good friend! Your photos and mod Awesome!
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Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
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https://www.astrobin.com/users/RamonLviv/
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Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
- Martin_S
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Re: 150mm refractor+Lunt50
That's a great mod Aleksey! ,where is the Ha 12nm filter positioned? is it for image enhancement or energy rejection?.
Martin
Martin
H alpha : ,Skywatcher 100mm F10 open frame refractor, a tilted 2" 7nm H-alpha filter as a sub energy rejection filter, Baader TZ4 telecentric focal extender, Player One energy rejection filter, Combo Quark Chromosphere, Naked PST etalon for double stacking, ASI74mm camera
- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
Thank you! The UHC filter comes first to reflect some of the energy towards the lens.
- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
Thanks Martin!
It is installed right before etalon. I noticed that after two filters the sunbeam was still warm. After installing the third filter, the temperature dropped significantly.
- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
Thanks Mark! I have a 135mm ERF, I'm mounting it behind the lens. I tested this filter sandwich as a cheap replacement for ERF.marktownley wrote: ↑Fri Apr 08, 2022 5:15 am Very good Aleksey! Longer term I would really suggest additional energy rejection, or at the very least mounting the existing filters higher up the tube.
- Aleksey Polyakov
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- Aleksey Polyakov
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Re: 150mm refractor+Lunt50
That will work very nicelyAleksey Polyakov wrote: ↑Fri Apr 08, 2022 6:09 pmThanks Mark! I have a 135mm ERF, I'm mounting it behind the lens. I tested this filter sandwich as a cheap replacement for ERF.marktownley wrote: ↑Fri Apr 08, 2022 5:15 am Very good Aleksey! Longer term I would really suggest additional energy rejection, or at the very least mounting the existing filters higher up the tube.
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- OlegLviv
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Re: 150mm refractor+Lunt50
Yes he have shorten OTA for pst mod early
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Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
https://www.astrobin.com/users/RamonLviv/
https://www.astroclub.kiev.ua/forum/ind ... ic=46758.0
Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
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Re: 150mm refractor+Lunt50
Excellent mod and very promising results!
Thanks for sharing.
Thanks for sharing.
Christian Viladrich
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Re: 150mm refractor+Lunt50
Interesting to see a second 152mm mod from you. I have had a coronado 60mm mod in the pipeline for some time now and am currently experimenting with etalon distance and focus distance. Thankyou for your inspiration in this field.
I could not get hold of an AR 152 (they are discontinued) and got a TS optics one instead so hope to share some results from that in the coming months.
Thanks,
Fraz.
I could not get hold of an AR 152 (they are discontinued) and got a TS optics one instead so hope to share some results from that in the coming months.
Thanks,
Fraz.
Stage 2 mod completed @ 100, 127.
Istar 228 arrived, building the frame slowly while learning cnc.
Istar 228 arrived, building the frame slowly while learning cnc.
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Re: 150mm refractor+Lunt50
Can I just add that your full discs are of exceptional quality and show very little graining. I wonder if this setup is more suited to that and wonder if you have used a focal reducer for those images or have created a mosaic?
Stage 2 mod completed @ 100, 127.
Istar 228 arrived, building the frame slowly while learning cnc.
Istar 228 arrived, building the frame slowly while learning cnc.
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Re: 150mm refractor+Lunt50
Hi, Aleksey
These images are very impressive. I especially like the first with very nice detail in the penumbra.
I'm waiting for a Lunt LS60MT in a few weeks to do a mod like yours with the etalon part coupled with a new Stellarvue 127 (seems to have generous back focus with a removable section) and a number of other telescopes I have.
I can do this mod because I found out the thread size of the etalon assembly (50 x 1) from a similar mod done by Malveaux.
I may try a mod with an LS50 like yours (if weight is a problem with the LS60MT). Would you mind sharing the thread size for your LS50 etalon? How did you find this out? Thanks.
Lou
These images are very impressive. I especially like the first with very nice detail in the penumbra.
I'm waiting for a Lunt LS60MT in a few weeks to do a mod like yours with the etalon part coupled with a new Stellarvue 127 (seems to have generous back focus with a removable section) and a number of other telescopes I have.
I can do this mod because I found out the thread size of the etalon assembly (50 x 1) from a similar mod done by Malveaux.
I may try a mod with an LS50 like yours (if weight is a problem with the LS60MT). Would you mind sharing the thread size for your LS50 etalon? How did you find this out? Thanks.
Lou
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Re: 150mm refractor+Lunt50
Hopefully Aleksey can confirm, I think the threads are M68. So you can get a commercial M68 to M48 adapter to do a 2" (M48) insertable module mod like this.gabrieli wrote: ↑Thu May 26, 2022 7:43 pm Hi, Aleksey
These images are very impressive. I especially like the first with very nice detail in the penumbra.
I'm waiting for a Lunt LS60MT in a few weeks to do a mod like yours with the etalon part coupled with a new Stellarvue 127 (seems to have generous back focus with a removable section) and a number of other telescopes I have.
I can do this mod because I found out the thread size of the etalon assembly (50 x 1) from a similar mod done by Malveaux.
I may try a mod with an LS50 like yours (if weight is a problem with the LS60MT). Would you mind sharing the thread size for your LS50 etalon? How did you find this out? Thanks.
Lou
Very best,
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Re: 150mm refractor+Lunt50
This is excellent result! When I tried this mod with my 6" APO and 50 Lunt I've got only very low contrast (of band) image. Good to see such good result .
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Re: 150mm refractor+Lunt50
Hello! What is your Brand Apo 6 ?
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Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
https://www.astrobin.com/users/RamonLviv/
https://www.astroclub.kiev.ua/forum/ind ... ic=46758.0
Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
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Re: 150mm refractor+Lunt50
Hi, it's "TS CF APO" 155mm f8 bought here: https://www.teleskop-express.de/shop/pr ... fikat.html.
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Re: 150mm refractor+Lunt50
Aleksey, do yo know how much "in focus" is required for the Lunt LS50Tha mod? This would be useful to know when doing this modification on a different scopes.
George
George
DS External SM90 Etalons, Single External SM40 Etalon, BF30, WO FLT98 f/6.3, Tak FS-102 f/8, Tak FS-60C f/5.9, DMK51, DMK21
?
DO you have data on where the Lunt etalon or even better the nose peice that goes in the focuser in your mod is in reference to the orginal focal point of the donor OTA ?
Ho large is the solar image att the (new ) nosepeice ? Fron that I guess i can calculate the back(or in) focus needed for different F/7 OTA's
Ho large is the solar image att the (new ) nosepeice ? Fron that I guess i can calculate the back(or in) focus needed for different F/7 OTA's
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Re: 150mm refractor+Lunt50
When did you buy the CFapo, Roman? We discovered a huge drop in image quality in the last 1.5 years with the CF-apo series.
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