- 40 mm, 26 mm, 10 mm, 7.5 mm focal lengths
- No-name, yet high quality, eyepieces from
- These are truly excellent eyepieces and have served me
a long time with my 200 mm telescope
- Celestron achromatic Barlow lens—for those select evenings
when the atmosphere seems to have disappeared. Saturn at 350x, yum!
- But once you've looked through a Nagler, Plössls just seem
We all know the name TeleVue and
drool at Nagler eyepieces (well, nowadays we drool at Ethos eyepieces).
After all the time and expense I put into my
new 400 mm telescope,
I decided to complement it with only the best.
- 27 mm, 24 mm Panoptic
- 13 mm Nagler Type-VI
The 27 mm Pan is maybe a bit too wide, showing just too much coma in an
f/4.5 Newtonian scope. The 24 mm shows less coma, and it comes in
a 1 1/4" barrel (the 26 has a 2" barrel), and therefore
fits better in my filter adapters.
Most my eyepieces (all except the 26 Pan) are 1 1/4"
size. Therefore it may seem a waste of money to buy 2" filters. But
in our arctic climate, attaching expensive filters to eyepiece threads
with fingers frozen numb
is something of a hazard. It is so much more convenient to leave each
filter to its own dedicated 1 1/4"-2" adapter. Not only is
changing filters a lot easier, but eyepieces can likewise be exchanged to
change magnification, without having to move the filter from one eyepiece
- Astronomik 2"
O-III visual filter
- Astronomik 2" UHC visual filter
- Both in their own 1 1/4"-2" adapters
- Lumicon 1 1/4" O-III—my old deep-sky
filter—after 10+ years
of use, it has developed a spotted appearance–that can't be good.
- Baader 1 1/4" Neodymium filter—Very good for
improving contrast on Jupiter and Saturn! (Also great fun
for eyeballing daytime surroundings, some shades of red are
- 1 1/4" Neutral density lunar filter, 2% transmission
- 1 1/4" #21 orange filter, which I bought once when
Mars was in opposition (not that effective, really)
- Really the easiest way to collimate a newtonian
- Funny, inside this contraption there is a laser pointer!
Those things must be cheaper than the laser diodes they contain!
Home-made Telrad copy
- Since I built myself a Telrad-clone, I've never wished for a
finder scope, although I once had a very good one (home-made also)
on my 200 mm scope (before rebuilding it from aluminum)
- The optics comprise a microscope slide, a lens, a first-surface mirror,
and the bullseye pattern photographed onto black-and-white negative
film, illuminated from behind with a LED
- I rarely make use of the bullseye ring pattern, so a red-dot sight
would do almost as well