I'm upgrading from an 80mm F/5 achromat to a 120mm F/5 Achromat (Orion 120ST). I would like to get the most from my new telescope. It has a 2 inch dual-speed focuser to which I will add a 2 inch diagonal.
As you can guess from my instrument choice, I want to scan the sky at low magnification, and occasionally zoom in a bit to pleasantly frame deep sky objects (mostly open clusters, brighter galaxies and nebulas, and the occasional globular). The wider the apparent field of view, the better. I understand that edge sharpness in fast telescopes is challenging. Naturally I am willing to sacrifice some edge sharpness in exchange for immersion. Planetary and lunar viewing through the 120mm F/5 is not a priority for me as I also own a Meade AR5 (127mm F/9.3) which I find satisfactory for planetary/lunar viewing.
Here is my current eyepiece collection (all 1.25"):
- 32mm Meade 4000 Super Plossl
- 26mm Meade 4000 Super Plossl
- 18mm Meade 4000 Super Wide Angle (my favourite in my 80mm F/5 achromat, and barlowed in my 127mm F9.3 achromat)
- 8mm Astro Tech Paradigm ED (on its way, haven't tried it yet. Got it for planetary/lunar in the AR5)
- Meade 2x Barlow
- Antares 2x(?) Barlow
To get the most from the 120mm F/5 refractor (and to retain adequate planetary views through the AR5), what eyepieces would you add, subtract, or replace (to / from / in) this collection if:
- Money is no object; and
- You have a $250 budget?
Since room in the astronomy case is limited, I would like to keep the collection to under 5 eyepieces. New or used matters not to me. All I care about is how good things look in the eyepiece.
Edited by skookum, 07 July 2020 - 01:12 PM.