LEVENHUK BLITZ 70S BASE (01) PDF Document

The aperture size for the LEVENHUK BLITZ 70S BASE telescope is 70 mm.

The focal length for the LEVENHUK BLITZ 70S BASE telescope is 300 mm.

The maximum magnification for the LEVENHUK BLITZ 70S BASE telescope is 140x.

The focal ratio for the LEVENHUK BLITZ 70S BASE telescope is f/4.

The focus tube diameter for the LEVENHUK BLITZ 70S BASE telescope mount is 0.965".

The tripod for the LEVENHUK BLITZ 70S BASE telescope is made of aluminum and has an adjustment range of 350 mm.

Yes, the LEVENHUK BLITZ 70S BASE telescope includes an accessory tray.

The finderscope included with the LEVENHUK BLITZ 70S BASE telescope is 5×24, optical.

The eyepiece sizes included with the LEVENHUK BLITZ 70S BASE telescope are 6 mm, 20 mm.

The diagonal mirror included with the LEVENHUK BLITZ 70S BASE telescope is 90 degrees.

The Barlow lens included with the LEVENHUK BLITZ 70S BASE telescope has a magnification factor of 3x.

The erecting eyepiece for the LEVENHUK BLITZ 70S BASE telescope has a magnification factor of 1.5x.

Never point the LEVENHUK BLITZ 70S BASE telescope directly at the sun, a laser beam, or any other bright light source without a professional solar filter, as this can cause PERMANENT RETINAL DAMAGE or BLINDNESS.

If the lens fogs up on the LEVENHUK BLITZ 70S BASE telescope, do not wipe it! Remove the moisture by using a hairdryer or by pointing the telescope downwards until the moisture evaporates on its own.

Do not touch the optical surfaces with your fingers. Clean the lens surface with compressed air or a special soft lens cleaning cloth. For cleaning the exterior surfaces of the LEVENHUK BLITZ 70S BASE telescope, use only special optics cleaning cloths and tools.

If the LEVENHUK BLITZ 70S BASE telescope is not in use, place the dust cap on its front part. Always place eyepieces in protective cases and cover them with caps. This prevents dust accumulation on the surface of the mirror and lens.

Protect the LEVENHUK BLITZ 70S BASE telescope from falls from heights and exposure to excessive mechanical force.

The instrument should be stored in a dry, cool place, away from hazardous acids and other chemical substances, heaters, open flames, and other sources of high temperature.

Lubricate mechanical parts containing metal and plastic connectors. Elements requiring lubrication include:

Tube

Precision mechanisms (focusing drawtube, precision telescope tube focus).

Mount

Worm gears, bearings, gears, threaded mount connections

Use universal silicone-based lubricants with an operating temperature range from -60 to +180°C.

To adjust the altitude slow-motion control:

Loosen the large locking knob located under the mount base and rotate the tube relative to the left or right axis, and then tighten the knob again.

To adjust the vertical setting, loosen the vertical adjustment knob and rotate the tube. Rotate the height fine adjustment knob for more precise vertical adjustment. Then rotate the grooved wheel on the fine motion rod.

Use the fine motion knob in the vertical direction for more precise adjustment.

The AZ mount is an altitude-azimuth mount that allows the LEVENHUK BLITZ 70S BASE telescope to rotate in the vertical and horizontal planes and change its altitude and azimuth.

To adjust the azimuth, loosen the azimuth lock knob and rotate the tube horizontally.

To install the finderscope:

Unscrew the two screws located at the rear part of the telescope tube.

Place the finderscope base over the holes in the tube.

Secure the finderscope in the correct position by tightening the screws (Fig. 4).

Aligning the finderscope is best done outdoors during the day when locating objects is easier.

First, refocus the image in the finderscope if necessary.

To align the finderscope, select an object at a distance of at least 450 m and aim the LEVENHUK BLITZ 70S BASE telescope at it. Adjust the telescope so that the object is in the center of the eyepiece field of view. Look through the finderscope and check if the object is also in the center of its crosshairs. Use the three adjustment screws (Fig. 7) to align the finderscope crosshairs with the object.

Slowly rotate the adjustment knobs until the image in the eyepiece is sharp. Due to slight temperature fluctuations, bending, etc., it is usually necessary to slightly adjust the focus.

A change in focus is almost always necessary when changing the eyepiece or adding or changing the Barlow lens (refractor 6a, reflector 6b).

Reference materials usually contain information on declination coordinates given in degrees, hours, and minutes below or above the horizon line.

Azimuth coordinates may be given according to compass directions (N, SW, ENE, etc.), but are more often given on a 360-degree scale, where North is designated as 0°, East as 90°, etc. (Fig. 8).

The technical specifications for the LEVENHUK BLITZ 70S BASE telescope are as follows:

The Barlow lens increases the magnification of the eyepiece while simultaneously reducing the field of view.

It expands the cone of focused light before it reaches the focal point, causing the focal length of the telescope to be extended relative to the eyepiece.

In addition to increasing magnification, the Barlow lens helps to increase the exit pupil distance and reduce the spherical aberration of the eyepiece.

For this reason, using a Barlow lens and a second lens often provides better results than using a single lens of the same magnification.

The most important advantage of the Barlow lens is the ability to double the number of eyepieces you own.

To assemble the tripod:

Slowly loosen the tripod locking knobs and gently extend the lower parts of the tripod legs. Tighten the screws to set the required height of the legs (Fig. 2).

Spread the tripod legs so that it stands upright.

Adjust the height of each leg until the tripod head is properly leveled. Remember that after leveling the mount, the height of the tripod legs may differ.

Place the accessory tray on the bracket and secure it with the knurled knobs from below or attach the accessory tray with one screw in its central part.

To mount the telescope tube without the fork assembly:

Unscrew the altitude lock knob from the mounting head.

Place the telescope optical tube onto the azimuth mount, aligning the holes in both elements.

Insert the altitude lock knob through the holes in the mounting head and the optical tube (check that the holes are not blocked before tightening the knob). Attach the tube by screwing in the altitude lock knob.

The telescope tube is equipped with a mounting plate on the bottom.

Place the plate into the recess in the upper part of the tripod head.

Tighten the knurled knob on the tripod head to secure the tube to the tripod.

Screw the handle into the threaded hole in the rear part of the mounting bracket.

The LEVENHUK BLITZ 70S BASE telescope can be equipped with additional accessories such as eyepieces, diagonal mirrors, or prisms, or Barlow lenses. Accessories should be mounted in the specified order.

To install accessories on the LEVENHUK BLITZ 70S BASE refractor:

Loosen the drawtube’s knurled screw and slide out the plastic cover from the drawtube.

Slide the diagonal mirror into the drawtube and tighten the knurled screw to secure the diagonal mirror (Fig. 5a).

Then, slide the appropriate eyepiece into the diagonal mirror and secure it by tightening the knurled screw.

If a Barlow lens is required, mount it between the diagonal mirror and the eyepiece.

An erecting eyepiece can be used to obtain an upright image.