Hello all, I'm going to be selling my 5 inch F-8 Starfire soon as I have a new scope coming. It is the 127mm, Blue tube Pre ED glass model made in 1988 or...
7968
demary@...
tomdemary
Nov 1, 2001 3:46 pm
Hello Dan, I remembered #5723 as an excellent summary of bino modes. It should be transformed into an A-P FAQ. I recalled it well enough to search the...
7969
demary@...
tomdemary
Nov 1, 2001 4:47 pm
... Sidgwick gives the equations in the Amateur Astronomer's Handbook. M = fb/(fb - d) where M is the amplification factor of the barlow, fb is the focal...
7971
yooody@...
yooody
Nov 2, 2001 2:46 am
Hi, Just curious if there is an advantage to using the 2.6 glaspath compensator, or a combination of the 1.25 and Barcon. Trying to squeeze as much...
7972
Derek Wong
derekalanwong
Nov 2, 2001 8:22 am
I would like to add a few comments to this excellent review. First, my eyes are less than .25 diopters apart but I saw a big enough difference that I wanted...
7973
Matt BenDaniel
mbendaniel
Nov 2, 2001 1:27 pm
I went to Arizona during October 11-21, exclusively to do astrophotography. I use an A-P 130 EDF, A-P 600, and medium format film. Enjoy: ...
7974
Pedro Santos
pbsegroups
Nov 2, 2001 1:32 pm
However when I adjust the eyepiece holders so that the images merge, the eyepieces are no longer covering exactly the same field, as the field in each eyepiece...
7975
Peter Natscher
taurus142000
Nov 2, 2001 3:12 pm
Hi Derek, Glad to hear that the eyepiece holders are working for you. Have you made any careful observations of Jupiter or Saturn with them lately? What scope...
7976
Derek Wong
derekalanwong
Nov 2, 2001 3:37 pm
Hi Peter: Due to crappy work schedule I cannot stay up late enough for Jupiter and Saturn to get very high. I had used them on the Stowaway and the moon, but...
7977
chuck_olson@...
olsonchuck
Nov 2, 2001 4:49 pm
Hi, Pedro, As you well know, there is the interocular adjustment for spacing the eyepieces horizontally. We normally use that to get the views of each eye the...
7978
Pedro Santos
pbsegroups
Nov 2, 2001 7:25 pm
Hi Chuck, But the two available adjustments are not interacting. The interocular adjustment has no effect at all in image collimation or the field available on...
7979
chuck_olson@...
olsonchuck
Nov 2, 2001 7:28 pm
Wow, Matt, Terrific idea, using overlays to guide the viewing. It reminds me of the beautiful transparent overlays of the internal structure of some machines,...
7980
wirewalker@...
graydon_math...
Nov 3, 2001 6:53 am
I hear that AP will have a public stock offering this winter... Of course, it will be offered first to those who got on the AP stock waiting list 3 years ago...
7981
Gary Irwin
garfield1573
Nov 3, 2001 2:02 pm
IPO? I certainly hope not. In order to boost stock price and maximize profits to keep stock holders happy, prices would be raised or quality lowered until...
7982
chuck_olson@...
olsonchuck
Nov 3, 2001 4:58 pm
Hi, Pedro, Are you doing your adjusting with the binoviewer on a scope, maybe viewing a terrestrial scene in the daytime? It might be best if you did. You're...
7983
Mike Cook, AF9Y
mwcook
Nov 3, 2001 7:27 pm
Roland, With the currently available large CCDs like the ST-10, there appears to be a real need for a telecompressor with field flattening properties....
7984
Danielbriot@...
Nov 4, 2001 2:31 pm
Hi everybody I am planning to build one small observatory to house my recently acquired EDT180. This will be installed im my garden, so the size has to be...
7985
Patrick J. Madden
RevPJMadden@...
Nov 4, 2001 3:04 pm
Daniel, Go to the website for Technical Innovations. They make the HomeDome. They have much useful information about building observatories, even if you do...
7986
bert katzung
katzung1
Nov 4, 2001 7:56 pm
Hi Daniel: I started out with a plan for an 8-feet-wide (E-W) and 10 feet (N-S) space but as I designed it and made measurements for my equipment, decided I ...
7987
terry@...
terrylo
Nov 5, 2001 7:38 am
With the arrival of several UPS packages the past few days, I had "first light" with my AP/Baader binoviewer this weekend. I was blown away! I know many of you...
7988
RLSchell@...
rlschell
Nov 5, 2001 3:29 pm
I use a SkyTent dome observatory of 10 feet diameter and 8.5 feet high at the center of the dome. My observatory currently houses a Celestron CI-700 mount on...
7989
RLSchell@...
rlschell
Nov 5, 2001 3:53 pm
I recently acquired a Star12 ED and I'm trying to get the focuser better adjusted. The bottom of the focuser pinion gear cover has eight screws in four pairs...
7990
Peter Natscher
taurus142000
Nov 5, 2001 5:07 pm
I'm considering purchasing a set of the new adjustable eyepiece holders for use on the AP/Baader Binoviewer. I have a few questions for any of the new owners...
7991
Palmer, Gerald
grpomega
Nov 5, 2001 7:22 pm
Have been trying to understand rudimentary optics based on the lens formula with moderate success. However, have the following problems: given lens formula ...
7993
DPMESSIER@...
dpmessier
Nov 5, 2001 9:58 pm
Does anyone know of a reticle illuminator for an older style AP polar alignment scope? Thanks for any help. Dave David P. Messier Norwich Express, Inc. Web...
7994
westergren@...
dmwmpd
Nov 5, 2001 10:41 pm
Hi Daniel, I have been using a SkyTent 10 ft diameter by 8.5 ft tall with my AP 180mm for three years now. I have it on an AP1200 mount with a 54" pier. You...
7995
Peter Natscher
taurus142000
Nov 5, 2001 10:44 pm
I have a A-P polar alignment scope off of my 1997 900QMD mount. It uses the old reticle and holds a small attached reticle illuminator which screws in at a...
7996
DPMESSIER@...
dpmessier
Nov 6, 2001 1:14 am
In a message dated 11/5/2001 5:47:03 PM Eastern Standard Time, ... Thanks Peter, I have an AP polar scope from about 1990. There is a place for the ...
7997
markdambrosio@...
apoman60612
Nov 6, 2001 2:44 am
Hi David, In a conversation with Marj many moons ago, Marj had stated that AP no longer carred the Illuminator for the older Polar Scopes, but did tell me...
7998
hbecker@...
oscarb57
Nov 6, 2001 3:54 am
As someone posted here a month or two ago, just shine a red LED flashlight into the open hole - I tried it on mine and it worked fine. Harold Becker ... polar...
