Designed for astrophotography but also great for observation, the FF65 APO Astronomical Telescope from ZWO features a quintuplet air-spaced apochromatic lens system that eliminates the need to use a separate field flattener. The quint APO has two extra-low dispersion elements and dramatically reduces chromatic aberration. It also eliminates the need to calculate back focus distance—just attach your camera with one of the four included adapters and you're ready for imaging. The f/6.4 focal ratio and 416mm focal length lend themselves to deep-sky photography, but add a diagonal with a high-magnification eyepiece and the scope is great for planetary observation.

65mm Apochromatic Refractor OTA    416mm Focal Length, f/6.4 Focal Ratio    Air-Spaced Quint APO with 2 ED Elements    Eliminates Need for Field Flattener    Supports Full-Frame 44mm Image Circle    Dual-Speed 2.5" Rack & Pinion Focuser    360° Rotator for Framing    M68, M54, M48 Camera Adapters    Tube Rings with Handle    Telescopic Lens Hood

• f/6.4 focal ratio and 416mm focal length allow for both deep-sky and planetary imaging
• Quintuplet air-spaced apochromatic refractor design with two ED elements produces rich views with minimal chromatic aberration
• APO is self-flattening, eliminating the need for a separate field flattener
• Supports 44mm image circle for full-frame cameras
• Fine spot diagram with tiny distortion of peripheral stars and under-2.5µ central RMS radius

• Sturdy 2.5" rack-and-pinion design can easily carry larger and heavier eyepieces, accessories like Barlows and focal reducers, and imaging systems
• 360° rotator with scales and finder base
• 10:1 fine adjustment ratio

• Anodized red handle and tube ring assembly, can be detached and reinstalled in seconds
• Handle has M6 screw holes for attaching accessories
• M68, M54, and M48 camera adapters

Related Questions and Answers

Q: 1. Does this have any dust or moisture protection? Will it be ok in mild dewey weather or dusty desert atmosphers?

A: The ZWO Seestar S50 50mm f/5 All-in-One Smart Telescope is not moisture resistant but it has a built in dew heater to remove dew build up which often occurs at night. It is not sealed against dust.

Q: 2. What's the storage capacity of the device? Can it save 4 hours solar eclipse time lapse pics?

A: The ZWO Seestar S50 50mm f/5 All-in-One Smart Telescope has 64GB of internal memory. Since the photos are only 2mp, it will easily store photos taken during an eclipse.

Q: 3. Is this compatable with a Galaxy S20 FE 5G?

A: Yes this this is compatible with Android 11 & Above.

Q: 4. Is Hestia effective in place of a spotting scope/digitscoping a wolf a mi away at Yellowstone?

A: Yes, the Vaonis Hestia Smartphone Telescope System is effective in place of a spotting scope/digitscoping a wolf a mi away at Yellowstone.

Q: 5. How many counterweights in total are included?

A: The Celestron CGX-L 1100 EdgeHD Telescope includes two 22-pound Celestron CGE PRO Counterweights.

Q: 6. Are the references to time in the App all based on Chinese time?

A: The time is based on your smartphone and location when using the ZWO Seestar S50.

Q: 7. I know I need wi-fi to download app. Do I still need it to operate telescope, "in the field"? IE a no wi-fi location?

A: The ZWO Seestar S50 50mm f/5 All-in-One Smart Telescope does not need Wi-Fi when in use. It can communicate with your smartphone or tablet using Bluetooth.

Q: 8. Can I use the Hestia system on my own tripod?

A: The Vaonis Hestia Smartphone Telescope System can use any tripod that has a 3/8 stud. It is recommended to use a fluid head tripod.

Q: 9. Another vendor reports that the safety of the Seestar solar filter is uncertain. Does B&H have any information on this?

A: There are no safety issues involving the ZWO Seestar S50 50mm f/5 All-in-One Smart Telescope, to our knowledge.

Q: 10. This product needs a 3.7-4.2 volt charger, NOT 5V like my iPhone has. Where do I get a charger for it?

A: The ZWO Seestar S50 50mm f/5 All-in-One Smart Telescope comes with a USB-C Charge Cable to be plugged into a Power supply to charge like this one: Belkin Boost Charge USB Type-C Power Bank (20,000mAh https://www.bhphotovideo.com/c/product/1600479-REG/belkin_bpb002btbk_boost_charge_20k_power.html