Flattener and Correctors:

Product description TS Optics 0.8x full-frame corrector for f/8 RC telescopes with M68x1 connection This reducer offers a complete correction of the image field of RC telescopes with reduction of the focal length to 80% at the same time. Pure focal reducers reduce the focal length without correcting the image field. The result is an aberration (astigmatism) in the corners. The larger the sensor, the more pronounced the aberration. The reducer is designed especially for the image field of f/8 RC telescopes, thus it eliminates the aberrations entirely. The results are sharper, pinpoint stars and easier focusing. Adaption to the telescope You have two possibilities of adapting to the RC telescope. You can thread the corrector to the focuser or countersink it into the drawtube if you have less than 135 mm working distance. Adaption via the female M68x1 thread at the telescope side Via suitable adapters, you can attach the corrector to any focusers from 2.5" upwards. You just have to provide the focuser with a male M68x1 thread at the camera side. Please note that you need at least 135 mm working distance from the male thread. Adaption with countersinking the corrector into the drawtube at the same time If there is less backfocus, we recommend countersinking the corrector into the drawtube. Thus the necessary backfocus is reduced to less than 100 mm. There are suitable adapters for example the adapter TSO-M78a-M68a for focusers with the female M78x1 . Adapting the camera The working distance from the male M68x1 thread at the camera side is 82 mm, thus you have enough space for individual adaptions or accessories like off-axis guiders. The male thread is not taken into account for the working distance, as it disappears into the connection adapter. Delivery contents 0.8x reducer and corrector for RC M68 dustcaps, made of metal, for both sides

Item condition: new and original packed

Altair Starwave v3 0.8x Reducer T2 Thread

Item condition: new and original packed

TS-Optics REFRACTOR 0.8x corrector for refractors up to 102 mm aperture - ADJUSTABLE

Item condition: new, but not original packed

The Skywatcher 0.85x focal reducer / field flattener has been designed for astronomers who want to use the renown ED Apo for astro photography. The flattener reduces the telescope's focal length by the factor of 0.85 and increases the useful field. As a positive side effect, the necessary integration times are significantly reduced. The field curvature that is unavoidable at most telescope systems is reduced to a nearly irrelevant level when using sensors up to APS-C format (24x16mm). Optimal distance M48 - focal plane: 55mm

Item condition: new and original packed

Skywatcher - 0.85x Focal Reducer/corrector for Evostar-80ED DS-PRO

Item condition: used, but with visible cosmetic markings

Product description Skywatcher Esprit 100ED Field Flattener with M48 Thread The original Skywatcher Esprit Field Flattener for the Esprit 100ED. The Flattener corrects the field of view and illuminates it up to full format cameras. Delivery contents Flattener

Item condition: new and original packed

0.77X REDUCER/FLATTENER FOR ESPRIT-150ED TRIPLET Designed specifically for the Sky-Watcher Esprit-150 ED Apo Refractor, the new three-lens Focal Reducer/Flattener has a reduction factor of 0.77x. It comes with a standard adaptor with M48 thread edge and 55mm back focus for use with Sky-Watcher's M48 Canon EOS (code 20237) and Nikon (code 20238) adaptor rings. After removing the adaptor, an M71x1 internal thread with maximum 75mm back focus is available for self-made adaptor solutions. The Reducer/Flattener produces a fully illuminated and corrected image circle of 34mm diameter and is therefore perfectly suitable for image formats up to APS-C but can also be used for full format. Scope of Delivery: Esprit 150ED Focal Reducer / Flattener 2 screwable dust covers Adapter to M48 thread Specifications: Coating: multi coating Reduction:: 0,77x Connection to camera: M48 thread

Item condition: new and original packed

TS-Optics PHOTOLINE Full Frame APO Corrector / Flattener for astrophotography

Item condition: new and original packed

TS Adapter for recessed adaptation of correctors in the focuser UNCN3M82 The TS V-Power focuser with the M82 threaded connection on the camera side accepts large correctors up to 3" body diameter. This adapter allows correctors to be connected via the M68x1 male thread on the corrector. The corrector is recessed into the draw tube, saving valuable optical path. Tilting, as is possible with clamping, is eliminated by the screw connection. On the camera side, the adapter has an M48x0.75 male thread for further adaptations. How the adapter works and what to consider: ♦ Screw the corrector into the M68x1 female thread of the adapter. ♦ Then screw the adapter with the corrector into the M82x1 female thread of the focuser. ♦ Please consider that the adapter needs 9 mm travel (length of the M68x1 female thread and overall length of the adapter) - these 9 mm must be subtracted from the working distance of the corrector. The advantage is that all larger correctors offer a longer working distance. Application example: TSKORW3 on a 325 mm f/4 Newtonian with this adapter: ♦ working distance of the KORW3 Wynne corrector is 64 mm ♦ 9 mm optical path to be subtracted - so 55 mm remain from the M48x0.75 male thread on the adapter. Ideal therefore for all photo adaptations ♦ The exact working distance can be established with suitable adaptations and tuning rings.

Item condition: new and original packed

TS - extension M69 (TS 2.5" Flattner / Guider)

Item condition: new, but not original packed

T2 Adapter for BW spotting scopes - Connection Adapter for photography BW spotting scopes from TS Optics are high-quality all-round spotting scopes for animal and landscape viewing. With this BW-T2 adapter, you convert the spotting cope to a long telephoto lens. Now you can engage in the fascinating area of digiscoping, the photography through spotting scopes. The adaption could not be easier: just gently screw off the eyecup of the zoom eypiece (counterclockwise), and screw the BW-T2 adapter on. With the optional T2 adapter or filter thread adapter, you can now attach your camera and get started. All functions of the spotting scope, like focusing and the variable magnification offered by the zoom eyepiece, are maintained for photography. You can use all popular cameras, like DSLR, mirrorless cameras and cameras with fixed lenses. Connection is always accomplished via the T2-thread of the adapter. Note: Some newer BW80Z and BW100Z do not have a threaded eyecup, so you cannot mount the adapter. You cannot even remove the eyecup, hence "gently". Scope of Delivery: Adapter

Item condition: new and original packed

APM-Riccardi Apo-Reducer small M63 0,75x, price each

Item condition: new and original packed