Celestron 52275 User Manual

C130mm Mak - #52275

Congratulations on your purchase of a Celestron spotting scope! Whether your interest lies in nature or astronomy this
spotting scope offers the finest in optical quality guaranteed to give you years of viewing pleasure.

Finderscope

Quick –Release
Bracket

90˚ Eyepiece

Barrel

Eyepiece

45˚ Erect Image

Diagonal

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Your C130 Mak has an internal flip mirror that can divert light either through the 90˚ eyepiece barrel at the top of the rear cell or directly
through the erect image diagonal (for daytime use) at the rear of the spotting scope. Make sure that the flip mirror is in the "down" position

for viewing with an eyepiece at 90

To install the eyepiece directly into the 90˚ eyepiece barrel (for astronomical use):

1. Loosen the thumbscrew on the eyepiece barrel so it does not obstruct the inner diameter of the barrel.

2. Slide the chrome portion of the eyepiece into the eyepiece barrel.

3. Tighten the thumbscrew to hold the eyepiece in place.

4. To remove the eyepiece, loosen the thumbscrew on the eyepiece barrel and slide the eyepiece out.

˚ and in the "up" position for viewing through the diagonal (see Figure 1-2).

Figure 1-1

Focus
Knob

Dovetail
Mounting
Bracket

To install the eyepiece onto the rear of the spotting scope (for land use):

1. Unthread the cap from the rear cell.

2. Thread the metal ring of the erect image diagonal onto the threads of the rear

cell.

3. Remove the caps and loosen the thumbscrew on the diagonal so it does not

obstruct the inner diameter of the barrel

4. Slide the chrome portion of the eyepiece into the eyepiece barrel.

5. Tighten the thumbscrew to hold the eyepiece in place.

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The C130 Mak comes with a 10x50mm finder. The first number used to describe the
finder is the power. The second number is the diameter of the objective lens in
millimeters. For example, the C130 Mak finder is 10x50 which means it is 10 power and has a 50mm objective lens. Incidentally, power
is always compared to the unaided human eye. So, a 10 power finder magnifies images ten times more than the human eye. The
finderscope is adjusted using the six adjustment screws located 120˚ around each finderscope ring.

The finderscope comes pre-assembled and is mounted inside the finderscope bracket rings. To attach the finderscope:

1. Loosen the set screw on the mounting bracket on the spotting scope (see Figure 1-3).

2. Slide the finder bracket (with finderscope attached) into the mounting bracket on the spotting scope.

3. The finderscope bracket will slide in from the back. The finderscope should be oriented so that the objective lens is toward the

front end of the spotting scope.

4. Tighten the set screw on the mounting bracket to hold the finderscope in

place.

Aligning the Finderscope:

To make things a little easier, you should align the finder during the day when it is
easier to locate objects. To align the finder:

1. Choose a conspicuous object that is over 500 yards away. This will eliminate any
possible parallax effect.

2. Point your spotting scope at the target and center it in the main optics of the
spotting scope (the eyepiece).

4. Check the finder to see where the object is located in the field of view.

5. Adjust the screws on the finder bracket, tightening one while loosening another, until the cross hairs are centered on the target.

Accurate alignment of the finder will make it much easier to find objects in the main optical tube. Remember that the finderscope is a
simple refracting telescope and therefore will always give an inverted (upside-down and backwards) view. Because of this, it may take a
few minutes to familiarize yourself with the directional change each screw has on the finder.

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Figure 1-2 – Flip mirror shown in the

"down" position for viewing from the

top of the rear cell.

Figure 1-3 – The finderscope and quick-

release bracket.

Your C130 can be mounted on either a photo tripod or an equatorial mount. The dovetail mounting bracket is compatible with many
equatorial mounts including Celestron’s CG-5 and Advanced GT “Goto” mount. The mounting bracket also has two ¼”-20 threaded holes
to mount on to a photo tripod (#93596).