Next space telescope could use a Fresnel lens
- Chich
- Articles: 0
- Posts: 503
- Joined: Fri Jul 05, 2019 6:40 am
- 4
- Location: Vancouver Island, BC
- Status:
Offline
-
TSS Awards Badges
Next space telescope could use a Fresnel lens
https://theconversation.com/a-new-thin- ... ses-206055
Keep calm and set SCE To AUX
Wildland fire: a strong tradition since 440,000,000 BCE
NEW for 345,000,000 BCE - Crown fires!
- AntennaGuy
- Articles: 0
- Posts: 1429
- Joined: Sun May 19, 2019 1:20 am
- 4
- Location: Tyler, TX USA
- Status:
Offline
-
TSS Awards Badges
Re: Next space telescope could use a Fresnel lens
Here's more technical details:
https://opg.optica.org/osac/fulltext.cf ... &id=446612
Looking forward to seeing this in Earth-based refractors for amateur astronomy?
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
- messier 111
- Articles: 0
- Posts: 9762
- Joined: Mon Nov 09, 2020 2:49 am
- 3
- Location: Canada's capital region .
- Status:
Offline
-
TSS Awards Badges
Re: Next space telescope could use a Fresnel lens
REFRACTOR , TS-Optics Doublet SD-APO 125 mm f/7.8 . Lunt 80mm MT Ha Doublet Refractor .
EYEPIECES, Delos , Delite and 26mm Nagler t5 , 2 zoom Svbony 7-21 , Orion Premium Linear BinoViewer .
FILTER , Nebustar 2 tele vue . Apm solar wedge . contrast booster 2 inches .
Mounts , cg-4 motorized , eq6 pro belt drive .
“Your assumptions are your windows on the world. Scrub them off every once in a while, or the light won't come in.”
― Isaac Asimov
Jean-Yves
- Graeme1858 Online
- Co-Administrator
- Articles: 1
- Posts: 7521
- Joined: Mon Jun 24, 2019 7:16 pm
- 4
- Location: North Kent, UK
- Status:
Online
-
TSS Awards Badges
TSS Photo of the Day
I Broke The Forum.
Re: Next space telescope could use a Fresnel lens
Thanks for the link.
Graeme
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
- SkyHiker
- Articles: 0
- Posts: 2293
- Joined: Sat May 11, 2019 8:40 pm
- 5
- Location: Santa Barbara, CA
- Status:
Offline
-
TSS Photo of the Day
TSS Awards Badges
Re: Next space telescope could use a Fresnel lens
Fresnel lenses are not useful for imaging at all. I don't see how this modification eliminates all the obvious disadvantages. It als suggests that it is meant for spectral analysis from planets passing in front of a star, as opposed to direct imaging that a good telescope can do. They talk about very smallAntennaGuy wrote: ↑Thu Jul 13, 2023 7:11 pm It will be interesting to see if they can make this work well over a decent bandwidth.
Here's more technical details:
https://opg.optica.org/osac/fulltext.cf ... &id=446612
Looking forward to seeing this in Earth-based refractors for amateur astronomy?
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute