Unusual Asahi Pentax accessory - Oscilloscope Adapter

**Baard-Einar** · 02-08-2022, 10:07 AM

Originally posted by AstroDave

This is how you got oscilloscope shots before Polaroid made an adapter. After that, if you wanted a shot of your 'scope data, you took a polaroid. Instant gratification. I could probably find a few of my own if I went looking!

Nowadays, the 'scopes are all digital, and you "capture" a screen dump of your data. (See my various flash duration data posts (e.g. Flash Duration Measurements for K3D Pop-up Flash - PentaxForums.com)

Find me one

**Baard-Einar** · 02-08-2022, 10:10 AM - **1 Like**

Originally posted by dkpentax

Something strange I got recently, an Asahi Pentax Oscilloscope Adapter from the M42 Era. it has a bayonet at the scope end, and a detachable mount at the front which you screw a 50, 55, or 58mm lens into, screw into the camera.

It is very cool. In my copy of the S2 user manual, japanese version, a picture of this is shown as an accessory. I would love to have this one, or the smaller version in my collection but I think most of them have been thrown out over the years.

**dkpentax** · 02-09-2022, 06:58 PM

I don't see any mention of it in an English version of any S1, S2, or S3 manuals, so I would guess that it is a Japan market item only. I don't have any Japanese language manuals of this vintage, do they have any pictures of other accessories that don't exist in the English manuals?

bdery · 02-10-2022, 07:09 AM

Originally posted by Paul the Sunman

Can it be used/adapted for any other purpose?

Slide duplication comes to mind.

**dkpentax** · 02-13-2022, 04:23 PM - **1 Like**

I just spotted another Japan sourced accessories guide, if you look closely at the picture, this oscilloscope tube it is there

**UncleVanya** · 02-13-2022, 06:03 PM

Originally posted by dkpentax

I just spotted another Japan sourced accessories guide, if you look closely at the picture, this oscilloscope tube it is there

Looks like both scope tubes are there and the copy pod etc. great find.

**dkpentax** · 02-13-2022, 06:51 PM - **1 Like**

I am ordering one of these handouts from japan, so soon I will put up scans of what is in it. I expect that I can coax some OCR to translate the text to English

**Lowell Goudge** · 02-16-2022, 05:04 AM

Originally posted by subsea

I actually used one of those with my Spotmatic F back in the mid-70s, to record traces from a Tektronix oscilloscope while working on my doctoral thesis in engineering. Neat find!

I used one with 120 roll film pack and a 75mm Graflex lens shutter combo. Switched to Polaroids by the early 1980s.

02-13-2022, 04:23 PM - 1 Like	#20
dkpentax Site Supporter Join Date: Jun 2020 Posts: 132 Original Poster	I just spotted another Japan sourced accessories guide, if you look closely at the picture, this oscilloscope tube it is there Attached Images

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: Asahi Pentax Bellows II M42 + Slide Copier + Asahi Pentax Reverse Adapter	blumoon722	Sold Items	1	11-01-2021 05:29 PM
For Sale - Sold: Asahi Pentax Bellows II M42 + Slide Copier + Asahi Pentax Reverse Adapter	blumoon722	Sold Items	0	07-22-2021 07:23 PM
For Sale - Sold: (New price)Asahi Pentax AP and Asahi Pentax K cameras 1957-58 (+ Pentax H3 and H1a )	17dew	Sold Items	13	10-08-2018 10:53 AM
K-01 Oscilloscope Adaptor	wombat2go	Do-It-Yourself	1	09-29-2013 05:21 PM
Asahi Pentax Lens and Accessory catalog, 1976/77	Nesster	Pentax SLR Lens Discussion	19	11-17-2010 01:12 AM

02-08-2022, 10:07 AM	#16
Baard-Einar Site Supporter Join Date: Jan 2010 Location: Oslo Photos: Gallery Posts: 964	Originally posted by AstroDave This is how you got oscilloscope shots before Polaroid made an adapter. After that, if you wanted a shot of your 'scope data, you took a polaroid. Instant gratification. I could probably find a few of my own if I went looking! Nowadays, the 'scopes are all digital, and you "capture" a screen dump of your data. (See my various flash duration data posts (e.g. Flash Duration Measurements for K3D Pop-up Flash - PentaxForums.com) Find me one

02-09-2022, 06:58 PM	#18
dkpentax Site Supporter Join Date: Jun 2020 Posts: 132 Original Poster	I don't see any mention of it in an English version of any S1, S2, or S3 manuals, so I would guess that it is a Japan market item only. I don't have any Japanese language manuals of this vintage, do they have any pictures of other accessories that don't exist in the English manuals?

02-10-2022, 07:09 AM	#19
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,362	Originally posted by Paul the Sunman Can it be used/adapted for any other purpose? Slide duplication comes to mind.

02-13-2022, 06:03 PM	#21
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,454	Originally posted by dkpentax I just spotted another Japan sourced accessories guide, if you look closely at the picture, this oscilloscope tube it is there Looks like both scope tubes are there and the copy pod etc. great find.

02-13-2022, 06:51 PM - 1 Like	#22
dkpentax Site Supporter Join Date: Jun 2020 Posts: 132 Original Poster	I am ordering one of these handouts from japan, so soon I will put up scans of what is in it. I expect that I can coax some OCR to translate the text to English

02-16-2022, 05:04 AM	#23
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,891	Originally posted by subsea I actually used one of those with my Spotmatic F back in the mid-70s, to record traces from a Tektronix oscilloscope while working on my doctoral thesis in engineering. Neat find! I used one with 120 roll film pack and a 75mm Graflex lens shutter combo. Switched to Polaroids by the early 1980s.