Tele Vue PLA-2001 User Manual

threading (PLA

-

2001)

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.

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).

2" - 1¼" Reducing
Adapter (ACF-2125)

Paracorr Tunable
Top (PTT-2002)

Height Adjustment
Lock Knob

Set Screw
Paracorr Photo Lens

Assembly with T-ring

2" Internal Filter Threads

ACF-2125 &
PTT-2002 are
optional for
use with the
PLA-2001

V3/29/2007

32 Elkay Drive, Chester, New York 10918 845.469.4551 www.televue.com