Baader Planetarium 28mm Hyperion Finetuning-Ring with M48 Filter Thread
The Baader Planetarium 28mm Hyperion Fine Tuning Ring will allow you to easily
change the focal length of your Hyperion eyepiece! Simply install it between
the front element and the main body of the eyepiece. The Baader 28mm Hyperion
Fine Tuning Ring is made to match the Hyperion finish and are fully internally
sharp v-threaded and blackened to eliminate stray light reflections from the
internal surfaces. The Baader 24mm Hyperion Eyepiece will not accept the Fine
Tuning Rings due to a difference in optical design. With the addition of
Baader's Fine Tuning Rings, your Hyperion eyepiece can now function as not
one, but four eyepieces with the addition of the Baader 14mm Fine Tuning Ring.
Both the 28mm Fine Tuning Ring and the 14mm Fine Tuning Ring have an outside
diameter (OD) of 2" and are threaded with a M48 (filter thread) on each end,
so they can be installed in between the removable front negative element and
the main body of the Baader Hyperion eyepiece. The added spacing decreases the
focal lengths (increases magnification), according to the table below. The
Baader Fine Tuning Rings are made to match the Hyperion finish and are fully
internally sharp v-threaded and blackened to eliminate stray light reflections
from the internal surfaces. Another novel way to change eyepiece focal length
is to use a Baader 2" Filter in between the Hyperion negative element and main
body, just like a small Fine Tuning Ring. The 8.5mm thickness of the filter
cell will have
- Make sure this fits. by entering your model number.
- Filter Thread: M48
- Diameter: Inner: 28mm / 1.1"Outer: 2" / 50.8mm
- Product Dimensions: 2 x 2 x 1 inches
- Item Weight: 0.8 ounces
- Shipping Weight: 12 ounces
- Item model number: 4332001853
Shipping & Handling
Orders are shipped within one day and tracking information is provided as soon as it is available from our carriers
Please ensure the correct shipping address is provided at the time of purchase. We cannot correct your address after purchase. We will not be responsible for incorrect addresses or undeliverable addresses.
Shipping to AK, HI, PO boxes, or APO addresses is not provided.
Returns within 14 days are excepted and a 15% restocking fee will be charged.
Filed under: Eyepieces & Accessories