Best bet is to keep an eye on fleabay and all the usual 2nd hand haunts for a PST objective, sometimes they come up minus the etalon if it has been used for a mod. The Maier or beloptik ITF could then be used in conjunction with the blocking filter... Mark, Sorry I missed this comment...that I coul...

Thanks, Mark, but I don't want an objective. I have been using my mod for several years now. The objective is useless to me and I'll never go back! :) I started this thread to see if I should check my ITF on my mod. Turns out I don't have an ITF. Should I try and mimic one somehow? I think I've must...

So I'm enjoying my mod, but what do I do to replace the ITF functionality? I've been using a Baader 1.25" on the camera nosepiece. I just tried moving it into the eyepice holder (well, just laying on top of the pentaprism which I have had to wedge into a single focus since the mechanism has failed) ...

IMG_3339.PNG IMG_3340.PNG IMG_3341.PNG IMG_3342.PNG IMG_3339.PNG IMG_3340.PNG IMG_3341.PNG IMG_3342.PNG Glad to hear I am not crazy. By the way, in order to achieve an image with a camera info have to place a Baader UV/Ir Cut on the camera to cut out what I thought the ITF was supposed to cut off. ...

I'm trying to check my ITF but I can't find it per all the posts I have read. I have a Coronado PDT #95471 and have had it since new for years. There is nothing between the BF 5 and the pentaprism and then nothing until the etalon assembly where I find a clear piece of glass where I would assume is ...

SolarChatted,
I'll be happy to share my hard-earned experience with this arrangement. I use a different camera but lots of success with the PST, a Baader glasspath corrector and the ERF.

Jack

Niiiiice.

Jack

Thanks, Val. What is the group consensus on Registax? I finally got that working as well yesterday and produced nice results.

Part of my workflow though is shooting in color because I do outreach and b/w simply is not as fun for the people watching.

Jack

Stu, Great question which got me started on a couple of new directions (thank you for that). First, I had indeed done sharpening of 15 in Autostaakert. Second, per your suggestion, I did download IMPPG and gave that a whirl with the defaults and a bit of playing around then imported into GIMP (again...

Yes. The scope is a 152 mm f6.5 achromat with Baader corrector to make it an f11 thereabouts.

His ERF Is a 6” Ha and Calcium if I recall.

Jack

Oops. Here is the adjusted one...

I'm really enjoying the new ERF from VAL on my PST Stage 1 152mm. I can Barlow only rarely since my scope does not like too much power, so today was a non-Barlow day. This is an AutoStakkert stack of 20 frames with a bit of curves adjustment. Ultra Smooth Map_Exp-20ms HDR-Y-0-64-in-8s Sharp-No Gain-...

VICTORY!!!! Now THIS is getting better! Here is a grayscale capture and a color capture, 13 best frames out of 80 (short video) in Autostakkert. Barlow brings the system to f22. No ROI needed since there was no "sweet spot" using the Barlow and Val's instructions. 2018-11-16_10-24-39.jpg Many thanks...

Earlier it was mentioned that I could move the position of the Glasspath further from the etalon. I thought the Glasspath simply converts the beam to straight therefore no impact to F/D. Am I incorrect? Should I move it a bit further from the etalon?

Jack

TheSkyBurner,
I never thanked you but...THANK YOU for taking the time to look up the thread counts and where to buy the "cheapo" adapter. That was very good of you.

Jack

Thank you, Val! And I did get your email and will send photos of the cell and results. I also appreciate your encouragement. The camera is 3.75x3.75 pixels. The Glasspath is 1:1.7 and I can't change that right now. I can shoot in grayscale, however, there is not as much enjoyment there for me since ...

SOLD!

Thank you for the workflow, Marty. Makes sense. In fact, you've got me going back to Autostakkert again.

Attached is the video going through one of my trials in Autostakkert this afternoon. Much improved. Room for more to be certain.

Marty, I love the progression of the raw video and the post processing. That is really helpful to gauge where I am. I am encouraged. Regarding the Glasspath...I can't wrap my brain around where to place it. It is currently sitting on top of the etalon so I cannot move it closer to the BF. However, t...

Gents, Thank you both for your input. I will fiddle with the Glasspath, but there are moments of good seeing in a video clip which indicate a sharp focus. Most of my work is live video outreach so post processing is a luxury when I have a moment using Registax. I'D LOVE some pointers on Registax as ...

I have successfully created my 152mm Stage One Mod. I purchased an ERF from Val (Aries) and I love it (anybody want to buy my Lunt 100mm ERF?). While I am pleased with the results, they are nowhere near what I am seeing others produce so I suspect there is more for me to try with your coaching OR......

I have a near perfect Lunt 100mm (4") ERF. This is used in a DIY PST (or similar) H-alpha scope modification. You may recognize this ad also on Cloudy Nights. In my case, I used it on the end of my inexpensive 100 mm donor scope and placed the PST (without its own 40 mm lens unit) in the focuser. Th...

Here is the external cell. Blocks lick it in to place. The old 100mm is riding on top. I then cut up this cell to 150mm and placed it on the third bafffle about 12 inches into the OTA (No photos). The good news is my DERF from Val should be shipped next week then I will have a superior piece of glas...

More good news! The internal mounted ERF also works well and reaches focus with and with out an ext3rnal Barlow on the camera. The Barlow is still super soft focus but the non Barlow image in the 152 is superior to the 100mm. Nothing looks like what you pros shoot but we are making great strides. Jack

Good news on the prototype. My clutter of extension tubes for the Stage 2 mod was too unwieldy for good testing so I went back to putting my Stage 1 mod into the 152mm. I used my Lunt 100mm ERF externally so I made a cardboard cell to hold the 100mm ERF and masked the 152 objective down to 100mm. I ...