Apertura 60EDR System manual

Length of the dew shield from front to back: 82mm
Outside diameter of scope behind dew shield (for dew heaters): 76mm
Minimum length for dew heater (circumference): 9.4”
Length of optical tube
Dew shield retracted and focuser retracted (from rotator ring): 223mm
Dew shield extended and focuser extended (from rotator ring): 348mm
Dew shield retracted and focuser extended (from rotator ring): 298mm
Dew shield extended and focuser retracted (from rotator ring): 273mm
Focal length: 360mm
Dew shield outside diameter: 80mm
Weight of scope without field flattener: 3lbs 11oz
(Weight includes the 2” and 2” to 1.25” eyepiece
adapter.)
Weight with field flattener: 3lbs 13oz
The Apertura 60EDR is an f/6 apochromatic
doublet utilizing two elements of FPL-53
glass. It has a lens diameter of 60mm, a
focal length of 360mm, and weight of 3lbs
and 13oz with the field flattener attached.
THE SCOPE
TUBE MEASUREMENTS
60EDR & FIELD FLATTENER: TECH SPECS

The dedicated Apertura Field Flattener will allow one to achieve pinpoint stars to the
edges of the field of view. This field flattener supports full frame cameras and is
adjustable so that the user can achieve perfect backfocus when using a range of
different cameras/accessories in their imaging train. This field flattener features m48
male threads on the camera-side, and m54 male threads on the telescope side.
field flattener
Corrected imaging circle of field flattener: Full
frame
Allows for 2” filter (see mechanical drawing)
Field flattener backfocus requirement: 58mm
(see mechanical drawing)
The field flattener requires 58mm of backfocus.
Adjust field flattener to 3mm for standard 55mm
backfocus requirements.

Size and thread of screws on bottom of focuser
Two silver hex screws to hold the focuser down:
m4 x 0.7tpi
Central Phillips locking screw: m8 x 0.75tpi
Far left and far right hex screws: m4 x 0.7tpi
Hex key needed: 2mm
Recommended mounting hole to attach
motorized focuser: m4 x 0.7tpi
Size and thread of tension knobs on top of focuser
Blue tension knob pitch: m8 x 0.75tpi
Hex tension screw: m4 x 0.7tpi
Hex key needed for tension knob: 2mm
Thumb screw thread pitch: m4 x 0.7tpi
Screws securing finder shoe
Screw size: m4 x 0.7tpi
Hex size for original screw: 2.5mm
Spacing between mounting holes: 20mm
Finder shoe requirements
Synta Style finder shoe with vertical and horizontal
mounting holes
Apertura finder shoe recommended
The focuser on the Apertura 60EDR is a dual speed (10:1) focuser with a fine tune
adjustment knob for precise manual focus. The focuser can be easily disassembled to
accommodate the ZWO Electronic Auto Focuser as well as other motorized focusers.
FOCUSER
Focuser mechanism: 10:1 coarse and fine
adjustment

The Apertura 60EDR features a ring/L-bracket for mounting both Vixen and Losmandy
style dovetails. Additionally, this doublet comes with a rotator to help orient your
camera so you can achieve that perfect framing on your next target. The rotator also
helps when using the 2” or 2” to 1.25” eyepiece adapter with brass compression ring to
adjust your diagonal for comfortable viewing.
Weight of dovetail ring/ L-Bracket: 5.5oz
This ring is reversible for proper balance with shorter
dovetails.
Threads on bottom of L-bracket
Top and bottom: 1/4” - 20
Central hole: 3/8” - 16
Spacing between top and bottom 1⁄4-20 holes: 30mm
Thread pitch of rotator: m54 x 0.75tpi
Thread depth of rotator: 8mm
Both 2” and 2” to 1.25” eyepiece adapters
contain a brass compression ring
2” to 1.25” adapter also threaded to accept
2” filter
ACCESSORIES/MISC.

The ZWO EAF is compatible through the coarse adjustment knob.
Step 1: With the lens facing away from you, turn the scope over so that the
bottom of the focuser is facing upwards. Remove the screw directly to the right
of the coarse adjustment knob.
Step 2: Look down into the screw hole and rotate the coarse adjustment knob
until you see another hex screw of the same size appear. Loosen but do not
remove this hex screw. Turn the coarse knob slightly more as there will be an-
other hex screw you must loosen. (Flashlight recommended.)
Step 3: Pull the coarse adjustment knob off.
Step 4: Attach the correct ZWO EAF coupler by sliding it onto the focuser shaft.
Tighten down the coupler using the provided hex screws.
Step 5: Slide ZWO EAF gear shaft into the other end of the coupler. Tighten
down the ZWO EAF gear shaft using the provided hex screws.
Step 6: Attach the ZWO EAF bracket to the EAF itself and then to the focuser
using the hole between the central gold Phillips screw and the fine tune adjust-
ment knob.
How to Attach ZWO Electronic Auto Focuser