ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
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ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Today the sun was hazy, so at least I tested. I tried the new ED triplet 90/F7 with Strehl 0.985 at F28 and refracted AR150/F15 at F45.
Interestingly, a quality ED tripler is also quite usable for detail. I'm curious to see how it performs when the weather is really good.
Interestingly, a quality ED tripler is also quite usable for detail. I'm curious to see how it performs when the weather is really good.
- Attachments
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- ED90/F7 IMX425
- ss1.jpg (370.17 KiB) Viewed 508 times
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- ED90/F7 IMX425
- ss1c.jpg (609.8 KiB) Viewed 508 times
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- ED90/F7 IMX425
- ss2.jpg (439.54 KiB) Viewed 508 times
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- ED90/F7 IMX425
- ss2c.jpg (590.15 KiB) Viewed 508 times
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- AR150/F15 IMX432
- s3c.jpg (317.05 KiB) Viewed 508 times
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- AR150/F15 IMX432
- s4c.jpg (300.63 KiB) Viewed 508 times
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- AR150/F15 IMX432
- s5c.jpg (425.64 KiB) Viewed 508 times
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- AR150/F15 IMX432
- s7c.jpg (547.53 KiB) Viewed 508 times
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- AR150/F15 IMX432
- sx2.jpg (546.17 KiB) Viewed 508 times
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- AR150/F15 IMX432
- sx2c.jpg (741.21 KiB) Viewed 508 times
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- AR150/F15 IMX432
- sx3.jpg (285.77 KiB) Viewed 508 times
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- AR150/F15 IMX432
- sx3c.jpg (491.83 KiB) Viewed 508 times
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Great work as always Petr!
Thanks for sharing,
Arne
Thanks for sharing,
Arne
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Nice images Petr, it's fun to play with different scopes.
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Great shots Petr
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Petr, What brand/make is the ED Triplet?
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
The lens is from LZOS.
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
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Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
It is an older fluorite triplet used by Stellarvue and TS. The prices of these telescopes were quite high. Mine with the FTT sharpener cost €3,200 12 years ago. There is also a measurement protocol from LZOS for it. The question is how much Strehl has deteriorated over the years. It happens quite often that after revision the results are not as good as with a new telescope. I want to try to convert it into a FD solar telescope with a collimated LS80+Quark. He still doesn't have a telescope for FD and that bothers me quite a bit.
Petr
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Petr, as always, is beyond praise! It seems to me that for shooting the sun in the hydrogen line, the characteristics of the lens in the red channel are more important than the Strehl number. However, for LZOS, they are most likely close to ideal. With the f7 triplet, Lunt will also work fine.
Ivan
Ivan
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Pupak,
I always wondered who’s glass StellarVue used. I had read some time back that they bought their lenses from someone else and did not grind their own. I read that they did do the final figuring of the lens on their own. This has been some time back.
James
I always wondered who’s glass StellarVue used. I had read some time back that they bought their lenses from someone else and did not grind their own. I read that they did do the final figuring of the lens on their own. This has been some time back.
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
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Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
It is possible that at different times they solved this by buying from other manufacturers. I'm not an expert on this brand. My piece has a lens from LZOS and I believe they went with a cheaper glass manufacturer a few years later. If it weren't for the protocol from LZOS, I wouldn't even know what kind of lens is there.
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
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Re: ED Triplet 90/F7 and AR150/F15 test H-alpha 22.05.
Excellent! The prom images are awesome.
Regards,
Steve
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