Why is it that H-alpha telescopes do not require special eyepieces?

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Solarscout
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Why is it that H-alpha telescopes do not require special eyepieces?

Post by Solarscout »

Coronado has CEMAX eyepieces for use with its telescopes and Lunt also has its eyepiece line which is made of the same anti-reflecting coating material as their etalons. Do they have preferred eyepieces or it is not at all necessary?


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Re: Why is it that H-alpha telescopes do not require special eyepieces?

Post by Dennis »

Regular EPs transmit the visible spectrum of light without any problems. I dont see a gain in coating EPs specially for h-alpha wavelength, as long as you use quality eyepieces that have proper lens edge blackening etc. If you dont have that it could be a cheaper alternative to get these specialized eyepieces.


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Re: Why is it that H-alpha telescopes do not require special eyepieces?

Post by DeepSolar64 »

I have the full set of Coronado CeMax eyepieces and two of the Lunt eyepieces. All do well and does the Coronado CeMax barlow but I don't see much if any difference in performance at all vs " standard " non Ha optimised eyepieces. My TeleVue, Celestron and Edmund RKE eyepieces also do good as well. I also have a good Orion 16mm flat field eyepiece that does well too.

Any decent eyepiece with good coatings that's well corrected with blackened lens edges should do just fine.

James


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Re: Why is it that H-alpha telescopes do not require special eyepieces?

Post by marktownley »

It's marketing guff - so if people like all the same branding with their kit, they can do.


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