About this product
Part Number: 6111
Incredible value 6" f/9 iOptron Photron Ritchey-Chrétien
An excellent choice for imaging smaller galaxy and nebulae targets.
IOptron Photron Ritchey-Chrétien telescopes feature low thermal expansion quartz primary and secondary mirrors with 99% percent reflective dielectric coatings.
The RC optical design delivers images free of coma, spherical and chromatic aberrations so is an excellent choice for colour or monochrome imaging.
A fixed position primary mirror eliminates image shift that normally occurs when focusing some other telescope designs. It also features a 2" dual-speed rotatable Crayford focuser.
Three CNC-machined spacer rings are included that provide flex-free focus extension when required.
Interior knife edge baffles reduce stray light for maximum contrast.
Fitted with a Vixen-style dovetail mounting plate.
- Coma free, chromatic aberration-free, spherical aberration-free optics
- 150mm (6") optical aperture
- 1370mm focal length
- f/9 focal ratio
- Fixed primary
- Low thermal expansion quartz mirrors
- Multiple knife-edge baffle system
- 2" dual-speed Crayford focuser
- Finder scope base and dovetails bar
- Optional finder scope, diagonal and 1.25" eyepiece
- Optional iOptron Electric Focuser (#8451)
The telescope is supplied with 2x 25mm and 1x 50mm CNC-machined focuser extension rings with matt-black interiors.
Telescope Field of View Simulator
What's in the box
- OTA w/2" dual speed Crayford focuser
- 2x 25mm Focuser Extensions
- 1x 50mm Focuser Extension
- 2" to 1.25" Adapter
- Vixen dovetail bar
|Optical Design ||Ritchey-Chretien |
|Clear Aperture ||150mm |
|Focal Length ||1370mm |
|Focal Ratio ||f/9 |
|Resolving Power ||0.76 arc seconds |
|Limiting Magnitude ||13.6 |
|Highest Useful Magnification ||180X |
|Secondary Mirror Size ||67mm |
|Focuser ||10:1 Crayford dual-speed |
|Focuser size ||2” |
|Dovetail Bar ||Vixen-style |
|Finderscope Base ||Yes |
|Finder scope ||Optional |
|Tube material ||Steel |
|Tube Length ||48.5cm / 19.1” |
|Tube Weight ||5.4 kg / 12 lbs |
|Other Accessories ||2” to 1.25” compression ring adapter; |
1" long extension tube X2
2" long extension tube X1
|Gross Weight ||8.2 kg / 18 lbs |
|Warranty ||Two year limited |
Downloads / Manuals
Manual: Photron RC telescope operation manualElectric focuser installation and operation manual
|Average Rating (4 Reviews): |
Monday, 23 December 2019 | Kathryn
Only used the scope once and the first time I have used this type and am so far very impressed with the short exposure time used.
Typical of these scopes it is back heavy and a counterweight is needed.
Once again First class service from First Light Optics.
Tuesday, 17 December 2019 | Peter
I have the TS-Optics version of this, generally they are rebadged GSO RC6 telescopes. These are fab little telescopes, though not for everyone. It's very back-heavy and a fiddle to collimate, and you lose 25% of the light collection ability due to the enormous central obstruction. However you get a fairly flat field and very few aberrations.
I've used it with a Canon 5d mk2, and it doesn't quite give an aberration-free view for a full-frame sensor but it's close (you get astigmatism in the edges of the field). The trick is to focus on a star *not* in the centre of the field. A focal reducer is definitely a good investment. Use the spacers to get the backfocus you need to fit in all the gubbins you want, this flexibility is amazing.
I've really enjoyed my time with this scope over the past year or so!
5 stars for service provided by Grant
Wednesday, 18 September 2019 | Theophilus
I purchased this scope in the hope that I was ready to tackle the world of reflectors...sadly, this is not the case and I'll keep using my refractors for a bit longer.
However, the customer service provided to me by Grant was exemplary and returning the scope was hassle free for a full refund...I've never had any problems dealing with FLO and from all other customer reviews, it's very clear that their professionalism extends far between the 'submit order' button!
Thanks again for the great service and multiple emails answering all of my questions!
Friday, 9 August 2019 | Shiela
The telescope is very nice and easy to handle for my poor back. The only negative is its back heavy when attaching a camera and you got to place it in the mount hight up in the saddle . A longer dovetail rail might help, but I just attached a counter-weight to the front end of the telescope to get good balance.
It was well collimated out of the box. Im please to say. Its great for deep sky imaging, with my DSLR , having already got some nice photos off M27, and M81-M82. I dont think f9 was a hindrance, as 2minute exposure clearly showed the brighter messier. objects.
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