I'm still working on this for my 98FLT myself. From the WO website the 76.8mm is for 98FLT as the scope gets larger(110FLT=73.5mm, 132FLT=71.5) the distance...
Hi all Still confused about where to set this PFLAT4 to for my Megrez 120mm scope. I have an Sbig St8300m and FW8-STL The st8300m BF is 17.5mm The FW8-STL BF...
Ed, I ordered a Baader 7.5 & 15mm Varilock adapters. If the sweet spot is 76.8 either one of these adapter should give me the ability to set the right back...
Dan, I'm still learning too, some of it the hard way. I was quoted the same 76.8 distance, but nobody will tell you from exactly what point on the Flat-IV...
Hi, I have a elderly FluoroStar 100 but after endless variations with almost every flattener going and I resorted to the TMB-designed William Optics field...
Is the nosepiece on the AFR-IV Adjustable Flattener/reducer removable (like on the ver III) ? if so what thread is on the flattener? I would need to attach it...
Hello, I set up my older WO 105 with my new Apogee 8300 last night. I tried it with the .8X ver III flattener and it didn't go well. I had a lot of edge coma...
Well I have another question...If what I have been reading is right the 76.8mm is from ccd to flat IV glass. My problem is this, please correct me if I'm...
I have the Sbig 8300M with FW5-8300 filter wheel is the recommended setting still 76.8 flat IV? and is the 76.8 mean setting it to that on the flattener? I've...
Hi Chuck, Thank you for the reply. I have e-mailed William Optics as you suggested and iif they reply will post a message on the forum. Regards, Gordon...
Gordon, I just used the suggested setting from this site and it worked. http://www.williamoptics.com/accessories/flattener4_spec.php, but I see they don't...
I have the previous (non DDG) focuser on my 90mm Megrez. I have had a good long session taking photos with a FF3 + Canon 30D + right-angle viewfinder mounted...
Chuck, Remarkable and fine image from your light polluted site! Gives me great encouragement as a relative beginner. I have the FF4 with a Megrez 120. Did you...
I took this shot from my very light polluted back yard with the flt 110 , ff 4 and a lumicon deep sky filter. It's only 8 minutes total because of clouds...
Hi i have just written in many forum around the world to show this "problem". I have the classical version of this telescope, aluminum tube, and i've replaced...
Setting the FF dial at 76 does not imply that your FF-CCD distance is at the recommended 76.8 mm distance. You should check the drawing provided for ff IV at...
Dear Group, I have a WO Megrez 120 with a WO Field Flattener IV and Canon 450D camera. The camera is interfaced to the FF IV via a 10mm T adapter. Does anyone...
Hi Tim Could you also provide the figure for a Megrez 90 with a x0.8 field flattener 3 ( the older f6.9 telescope), have just acquired a sbig st8300. Many...
Chuck I've been very pleased with the W/O reducer flattener IV on my FLT110 Lite. The adjustability allows use with my DSLR and SBIG camera's without adding...
I have the flt 110 field flatener which works great. I am now looking for a ff/focal reducer that works just as good. Does anyone have an idea. Chuck...
Well, a guess it is a constant topic, but most everyone that got an FLT scope for serious step up in astrophotography soon comes by mechanical issues with its...
