The Baader UFC S70 Base Connector from Alpine Astronomical features a mounting plate and comes with mounting screws for attaching it to the S70 dovetail on the telescope side of the optional Baader UFC Base (filter chamber). It features a 2mm optical height and has a 70mm inner diameter.

Attaches to Optional Baader UFC Base    2mm Optical Height/70mm Inner Diameter    S70 Dovetail on Camera Side    Allows Stacking Several UFC Bases

Enables special applications for IDAS photography, image composition, and stacking

Mounting plate on the telescope side for attachment to the optional Baader UFC Base (mounting screws are included)

S70 dovetail connection on the camera side for stacking several UFC bases in order to be able to use more than one filter in the light path

Related Questions and Answers

Q: 1. How is this tightened onto the camera? Need a special tool?

A: You will need this baseplate; iFootage Seastars Q1-BASE Quick Release Base Plate B&H # IFSEASTARQ1B Attach a separately available top plate to your rig, then drop it into the base and simply rotate the collar until it clicks. https://youtu.be/eLHJAVmJyFU

Q: 2. Is the bag as good as the Lowepro 600 mm bag? This bag is much cheaper, so I am not sure if it is as well made or not.

A: I'm not familiar with the other bag, so i can't compare. I just got this bag because i bought a 500mm lens and it seems to be a good quality bag.

Q: 3. Does this bag hold a full-size DSLR and Canon 600mm F4 lens with the hood attached? Any room for an extra lens?

A: I have a Nikon 600mm and a D5 base. It fits the lens comfortably and I put the D5 on top of as there is a partition between the lens compartment and the top of bag. If you didn't use the top portion for your camera base you could possibly put a 24-70 or smaller in that space. The pockets on the side are great for putting all of your extra gear like cards, batteries, etc.

Q: 4. Will it fit the width of a 400 f/2.8 lens?

A: Yes,the 400mm 2.8 will fit without any issues.

Q: 5. Is this item the same as badder Universal Alan Gee II - Telecompressor (UAG II) ?

A: No, the Alpine Astronomical Alan Gee Mark II Telecompressor is not the same as the Universal Alan Gee II - Telecompressor (UAG II). If looking on the baader-planetarium.com site, the item here would be # 2454400, whereas the UAG II is # 2454405.

Q: 6. Specs says weight is 6.0 lb but package weight is 5.6 lb. Kindly clarify what is the actual empty weight? Thanks!

A: The empty weight of this back is 5.6 lbs.

Q: 7. in continuation with previous question. So do i need to purchase Alpine Astronomical Baader T-2 90 Prism Star Diagonal Housing separately ?

A: It should come with everything you may need: In the Box Alpine Astronomical Baader MaxBright II Binoviewer (1.25") Carrying Case Zeiss Micro-Bayonet Mounting Adapter Limited 2-Year Warranty Alpine Astronomical Glasspath Corrector 2.6x for Maxbright/Mark V Binoviewers Limited 2-Year Warranty Alpine Astronomical Baader 2" T-2 Nosepiece Limited 2-Year Warranty I dose not come with eyepieces.

Q: 8. Is this bag large enough to fit a Canon r5 with RF 200-800 lens attached (lens hood reversed)?

A: Yes, the Ruggard Alpine 600 Lens Backpack for DSLR and 600/800mm will fit the Canon EOS R5 Mirrorless Camera and the Canon RF 200-800mm f/6.3-9 IS USM Lens with the lens hood reversed.

Q: 9. is it padded inside? does the cover seal out dust? thanks.

A: No it is not padded on the inside and if properly sealed it keep out some dust. I keep my lenses in these and store these in my camera bag. I adds some additional protection from scratches and dings. They also make it easy to grab a lens and put it in your day pack for lite hiking trips.

Q: 10. Is this bag too big for a Sony A7riv + FE200-600mm with or without the 1.4x or 2.04x Teleconverters?

A: As stated below, this bag is a little big for that combination but I still think it would be a great fit. An A7RIV with a 200-600mm lens and a teleconverter would be well padded and secure in a bag like this. You'll have extra room to toss in some extra stuff like batteries and other small accessories.