Pleiades

[Steve]

The Hyperion zoom is a useful eyepiece but the FOV reduces from 68 degrees at 8mm to 50 degrees at 24mm. You will fit Pleiades in the FOV when used with your 90mm f11 Astromaster, but only just.

HTH

[michael.h.f.wilkinson]

The Hyperion zoom has a narrower FOV than the Hyperion 24mm (50 deg at 24mm in the zoom, versus 68 deg in the 24mm). The Astromaster 90 has a focal length of 1000 mm, so not much shorter than the 150PL. It is the short tube refractors (and big binoculars) which give the best views of these wide objects.

[wcgucfa]

When I was about 10 years old, my older brother

had the necessity to work on his always ailing car at

night, due to his getting home late from his job.

I would hold the flashlight for him while he tinkered

under the hood. He would get a little angry at me

because I couldn't seem to hold light right on the spot

he wanted. Of course, I did have the light pointed into

the engine, but my eyes were aimed upward toward bits

of beauty like the Pleiades!

This is a beautiful cluster in ANY size binoculars mounted

on a tripod. Again, when I was ten, everyone told me it

was the "Little Dipper." Understandably, due to its miniture

dipper shape.

Bill - 11/25/11

Sony Digital Snapshot Camera F-707, afocal through an Orion SVP refractor equipped with a 40mm EP.

30 second exposure. 25x magnification, 1 degree 44' field. mirror image.