The photography sleeve of the M42x0.75mm t-ring adapter fits spotting scope.
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Svbony SC002 WiFi Camera, Digiscoping Camera Compatible with SV28 SV41 Pro Spotting Scope SV202 Binoculars for Bird Watching
Aliexpress UK
Has a super smooth eyepiece fine focus adapter to adjust correctly to your eye - twist the knurled ring on the eyepiece.
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Spotting Scope Smartphone Camera Adapter Telescope Camera Adapter Cell Phone Adapter Mount for Binocular Monocular Quick Aligned
Aliexpress UK
1 Piece 42mm Spotting Scope Mount Adapter. - Thread: Both the Adapter are Universal M42x0.75 Thread. - Material: Aluminum.
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VILTROX NF-Z Auto Focus Lens adapter for Nikon F lens to Nikon Z Mount Camera Like ZFC Z5 Z50 Z6 Z7 Z6II Z7Ⅱ
Aliexpress UK
The adapter also has a M48x0.75mm internal thread so that it screws on any M48x0.75 male thread (=2" filter thread) that is often found with large scopes (eg. 30-90x100 spotting scope). (For example, the Nipon30-90x100 zoom spotting scope has M48x0.75 male thread on its eyepiece base).
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SVBONY Tripod Portable 49" Travel Aluminum Lightweight for DSLR Cameras Video Spotting Scope Watching w/Carrying Bag SV102 SV101
Aliexpress UK
This adapter set is suitable for Nipon 25-125x92 and Nipon 25-75x70 spotting scopes. There is no need to screw the barrel all the way in but the connection is secure enough. Can fit Nipon 25-125x92 and 25-75x70 spotting scopes and other scope models with compatible size & threads.
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shift Tilt adapter ring for nikon G/F/AI/S/D Lens To Panasonic m43 GH4 gh5 GM1 gx7 GX9 gx85 g85 gf10 gf7 EM5 EM1 EM10 camera
Aliexpress UK
1 Piece 42mm Spotting Scope Mount Adapter. Thread: Both the Adapter are Universal M42x0.75 Thread. It's just take you 1 minute. We'd like to settle any problem in a friendly manner. Because the unpaid dispute will not be closed automatically, and we may ignore it.
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Viltrox E-Z AF Lens Mount Adapter for Sony E-mount Lens to Nikon Z-mount Mirrorless Camera
Aliexpress UK
1 Piece 42mm Spotting Scope Mount Adapter. Thread: Both the Adapter are Universal M42x0.75 Thread. It's just take you 1 minute. We'd like to settle any problem in a friendly manner.
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Spotting Scope GoPro Hero 12/11/10/9 Side Camera Adapter Bracket While Aiming Record Black Aluminum Svbony Telescopio Lunetas
Aliexpress UK
1 Piece 42mm Spotting Scope Mount Adapter. Thread: Both the Adapter are Universal M42x0.75 Thread. It's just take you 1 minute. We'd like to settle any problem in a friendly manner. Because the unpaid dispute will not be closed automatically, and we may ignore it.
eBay
Tactical Rail Mount fit red dot sight scope Hot Shoe Base Adapter for Hunting Canon/Nikon DSLR Camera Photograph Dropshipping
Aliexpress UK