TS-Optics NEWTONIAN Coma Corrector 0.95x Maxfield - 3-element - 2" connection

The TS-Optics 2" MaxField Newtonian coma corrector is suitable for all Newtonian telescopes and provides outstanding correction on the axis and in the field.

♦ Suitable for Newtonian telescopes with focal ratios of f/6 to f/4

♦ Very good illumination of 35 mm due to short design and M48 thread connection - even suitable for full-frame size sensors

♦ Finer stars on the axis and in the field through the 3-element design

♦ Improves the focal ratio by the factor 0.95 - the telescope becomes faster

♦ The focus position is maintained

♦ 2" filter thread at the telescope side

♦ Length only 72 mm for better illumination. The corrector does not protrude into the telescope tube

♦ 55 mm working distance from the M48 thread - perfectly suitable for DSLR and astro cameras

 

TS-Optics 2" MaxField Coma Corrector for Newtonian Telescopes - suitable for Cameras up to full frame size Sensors

This Newtonian coma corrector combines the advantages of the short 2-element coma correctors with the outstanding field correction of the Wynne corrector and the GPU. The corrector is usable with any Newtonian with a 2" focuser. It provides 100% ilumination up to 35 mm diameter and 95% illumination up to 43 mm diameter, so the MaxField Coma Corrector is even suitable for cameras with full-frame size sensors.

On Astrobin you will find many exciting astrophotos with the TS-Optics Maxfield coma corrector. See for yourself how well the corrector works. Link to Astrobin - Images with the TS-Optics Maxfield Corrector
 

The advantages of the 2" MaxField coma corrector over the GPU:

Star sharpness on the axis and in the filed is comparable. But with 72 mm length (length of the 2" barrel), the corrector is significantly shorter than the GPU which has 100 mm length. Thus the TS-Optics MaxField corrector has two advantages:

♦ The focuser does not protrude into the inside of the telescope even if it is completely sunk into the focuser.
♦ The illuminated field is by more than 20% larger than the field of the GPU, due to the shorter length.
 

The advantages of the 2" MaxField coma corrector over the short 2-element coma correctors:

The TS MaxField consists, like the Wynne correctors, of three lenses. The stars on the axis and in the field become finer and smaller than simple Ross correctors can provide. Especially the new astro cameras with very small pixels show the difference very clearly.
 

Furter features of the TS MaxField Coma Corrector:

♦ Versatile - usable for photography and for observation with an optional 2" adapter
♦ Flexible camera adaption with the M48x0.75 thread
♦ M48 adapters for DSLR available
♦ 55 mm working distance - suitable for DSLR cameras and also for astro cameras like the ones from ZWO
♦ Very good multi-coated optics for highest sharpness without distracting reflections
♦ Reduces the focal length by the factor 0.95. The focal plane is not changed.
♦ The corrector fits to any Newtonian with 2" focuser and a working distance of at least 60 mm. These prerequisites are fulfilled by almost all Newtonian telescopes on the market.
 

Suggestion for an astro camera with 17.5 mm camera back focus and T2 connector:

The camera back focus or flange focal distance is the distance from the T2 (M42x0.75) thread to the sensor. Most cooled astro cameras have this distance.

Adaption with filter drawer for filter change:
♦ Astro Camera ... 17.5 mm flange focal distance
♦ TSM48-T2L extension to M48 ... 6 mm travel
♦ TSFSLM48 ... Filter drawer ... 18 mm travel
♦ BAHYP14 ... 14 mm M48 extension ... 14 mm path

The additional 0.5 mm compensates the optical path of the filter. About 1/3 of the filter diameter must always be added to the working distance of the corrector (55 mm).

 

Use:	Correction of the Newtonian coma
Suitable for:	Newtonian telescopes f/4 and slower
Working distance:	55 mm from the M48x0.75 thread
2" filter thread:	yes
Camera connection:	M48x0.75 thread - length 4.5 mm
100% illumination:	35 mm
Usable field:	fully corrected up to 45 mm and also well illuminated (93%)
Stop ring:	65 mm outer diameter, removable
Barrel size at the telescope side:	2"
Elements:	Modified 3-element Wynne system
Length of the 2" barrel:	72 mm

In the box:

♦ TS MaxField Coma Corrector