Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Moon - 15.4.2022 at 23.23 Harjavalta Observation number 106181

Visibility III / V

Jari Kuula, Porin Karhunvartijat

Not really an observation, but an implementation of an idea. T + A 3/2022 p.64 Jeff Graphy presents the projection of the Moon, and the image inspires us to think of the same system with a small tube. I would make the scaffold stand out of paff and grill sticks, and the reflective surface itself is translucent paper, so the image is viewed opposite the eyepiece. Nearly a full moon was photographed admirably despite the stray light, and a brighter telescope with a larger aperture would work better. In star shows and teaching situations, one could use when several can watch the same, live image.

Additional information
  • Observation target
    • Moon
Technical information

Mak 170 f 2550mm, okul. 32mm

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.