Tele Vue Paracorr Coma Corrector PHOTO LENS (PLA-2001) - Manual

32 Elkay Drive, Chester, New York 10918 845.469.4551 www.televue.com
TELE VUE PARACORR COMA CORRECTOR
PHOTO LENS ASSEMBLY INSTRUCTIONS
(PLA-2001)
Tele Vue’s PARACORR PHOTO LENS ASSEMBLY (product code PLA-2001) is designed to correct the coma
inherent in any fast (f/4 – f/6) parabolic mirror used in Dobsonian or Newtonian reflectors. It can be used
alone for photography (film or CCD), or it can be used visually by adding the Tunable Top.
Photography
•
For 35mm film photography, simply screw the Paracorr Lens Assembly onto the T-ring adapter for your
35mm camera and insert it into your 2" focuser.
•
For use with CCD cameras, best results will be obtained by assuring that the CCD surface is located
56mm from the shoulder of the Paracorr Lens Assembly (a tolerance of ±4mm should not reveal much
difference).
Visual Conversion
•
For visual use with 2" eyepieces, just screw the optional PARACORR TUNABLE TOP (product code PTT-
2002) onto the Paracorr Lens Assembly and secure it by tightening the set screw with the included Allen
wrench.
•
For visual use with 1¼" eyepieces, insert the optional 2"–1¼" REDUCING ADAPTER (product code ACF-
2125) into the Tunable Top.
•
These setups are ideal for all Tele Vue eyepieces, except the 31mm Nagler Type 5 and 41mm Panoptic,
which will exhibit some vignetting (edge of field darkening). To overcome the vignetting, the
VISUAL
ONLY PARACORR (product code PCV-2000) is recommended. It incorporates a larger lens instead of T-
ring threads and includes the Tunable Top and Reducing Adapter. Please note that the lens assembly
portion of the
VISUAL ONLY PARACORR cannot be unscrewed.
V3/29/2007
2" - 1¼" Reducing
Adapter (ACF-2125)
Paracorr Tunable
Top (PTT-2002)
Paracorr Photo Lens
Assembly with T-ring
threading (PLA-2001)
CAUTION: Inserting a 1¼" Tele Vue 2x or 3x Barlow into the PCV-2000 or PLA-2001 with a
Tunable Top will contact the Paracorr lens, possibly causing damage. To prevent this from
happening, use Tele Vue’s 'high hat' 2"-1¼" adapter (product code ACR-2125).
ACF-2125 &
PTT-2002 are
optional for
use with the
PLA-2001
Height Adjustment
Lock Knob
Set Screw
2" Internal Filter Threads