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Post Pics of your Tasco 7TE series scope

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#51 Stargoat

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Posted 11 April 2018 - 01:25 AM

Thanks Stephen  for your info on these interesting instruments !!!  waytogo.gif  The 7T 304X  I have - # 0461178- has the distinctive RAO marking on the focuser but does'nt have the adjustable objective cell. Smooth mount, and the single knob on the tube clamp. It also has the metal objective cover and small wooden tray as well. I also added a 1.25 threaded  eyepiece adapter as an accessory last year that allows me to use eyepieces of that size on the scope  if I choose . Gary 

Gary, I just looked at your photos for serial number 0461178.

 

Here is link to your posting of your very nice example of the Tasco 304 Power that I believe fits the late 1959 to mid1960 time frame.

 

Scope serial number 0461178 link.

 

Maybe we are not using the same description for some of the parts. But I see the 4 hole metal accessory tray and the pair of wooden dividers for storing the assembled scope in the wood box. The pair of wood dividers now also have a pair of holes in each divider where two small brass rods that IIRC are 2mm OD have threaded ends for brass hex nuts that are used to hold the wooden dividers together as a unit. More often than not, one or both brass rods are missing from this version of the scope. Many times only one divider is found as well.

 

Also as it should, it has the Astro Optical stamp on the focuser name plate.

 

Last it does have the newer objective cell as it should.

 

Naturally, there are exceptions to each group of serial numbers which I'm sure are due to inventory and or if the scope was crated near the end or beginning of that group of scopes.

 

Let me know if I do not have the correct scope linked above for this posting of mine. Thks.



#52 Stargoat

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Posted 11 April 2018 - 01:48 AM

Stephen, your research is very much appreciated!!!  bow.gif

 

Maybe that was the Astro Optical symbol before they became Royal Astro Optical.  hmm.gif

Thanks Keith!!

 

I forgot to mention and wanted to ask you if your serial number 046366 has a traditional rack and pinion arrangement or if it does not?

 

Meaning that the rack is cut into the draw tube, thus no machined rack assembled on the draw tube. The different style pinion block is painted black and just applies tension to hold the pinion gear in contact with the cuts in the draw tube. That is how mine is which is serial number 046172.

 

I believe this was a very short lived idea that was soon replaced with the traditional rack and pinion. If not, then there may have been two suppliers for the focuser housings.

 

Please see the photo of my focuser housing for serial number 046172 for reference.

Attached Thumbnails

  • Tasco 304 Power_Draw Tube_Internal Rack 046172_.jpg
  • Tasco 304 Power_Focuser_Draw Tube_Internal Rack 046172_.jpg

Edited by Stargoat, 11 April 2018 - 02:17 AM.

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#53 walter a

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Posted 11 April 2018 - 06:22 AM

My 152X and 304X

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#54 walter a

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Posted 11 April 2018 - 06:26 AM

and 7TE-5

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#55 Chuck Hards

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Posted 11 April 2018 - 07:00 AM

Some nice examples posted, thanks everyone, keep 'em coming!

 

And many thanks to Stephen for his tireless efforts at documenting the Tasco product line and sorting-out the production history.  waytogo.gif

 

If I had to choose only one 60mm scope, the 7TE could very possibly be the one.  But please don't make me pick just one.  :lol:


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#56 BarabinoSr

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Posted 11 April 2018 - 11:59 AM

Good morning Steven!  My scope  has the rack bar mounted onto the focuser tube with approximately the same amount of travel as yours.



#57 dawsonian2000

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Posted 11 April 2018 - 12:15 PM

Awesome Tasco 7te's everyone!

 

Here is a photo of one of my 7te-5's riding an EQ-2 from a Jason 313 Discoverer. Back in 2013, I had Dan Crawford of CrawMach make me a Crayford focuser for the OTA.

 

I also posted a thread about the modification called "Modernizing the Classic Tasco 7te-5 OTA".

 

 

Thanks,

Mel

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Edited by dawsonian2000, 11 April 2018 - 12:18 PM.

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#58 Chuck Hards

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Posted 11 April 2018 - 01:17 PM

That's quite the hybrid, Mel.

 

I almost stuck a 2" focuser on my 60mm f/20 SPI, but couldn't go through with it.  Settled for a 1.25" visual back on the stock drawtube.

 

What we need is a hybrid diagonal designed to accept 2" eyepieces but fit in a .965" focuser.  :lol:



#59 Stargoat

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Posted 11 April 2018 - 01:55 PM

Good morning Steven!  My scope  has the rack bar mounted onto the focuser tube with approximately the same amount of travel as yours.

Gary, that is what I was seeing in your posting linked below. Thanks for the additional information to confirm the style of focuser R & P that you have on your scope.

 

That is what I'd expected since your scope is the newer relatively speaking 7 digit 046XXXX serial number group.

 

But of course there must be and are exceptions to every group of serial numbers I give a date range. Exceptions IMHO are based on inventory or suppliers factors etc. I'm always looking for the exceptions that help to transition one group of serial number to the next.

 

Tasco 304 Power Focuser Ser No 0461178_CN Post #9 Ref Photo Link

 

I marked up your photo to help explain just what we are referring to here in this posting. 

 

Additional photo is what the focuser housing and R & P look like for the external rack mounted on the draw tube for reference.

Attached Thumbnails

  • Tasco 304 Power_Focuser Rack_Ser No 0461178_GaryB_Marked Up Pic.jpg
  • Tasco 304 Power_Draw Tube_External Rack Example_.jpg

Edited by Stargoat, 11 April 2018 - 01:58 PM.

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#60 Stargoat

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Posted 11 April 2018 - 02:32 PM


Meaning that the rack is cut into the draw tube, thus no machined rack assembled on the draw tube. The different style pinion block is painted black and just applies tension to hold the pinion gear in contact with the cuts in the draw tube. That is how mine is which is serial number 046172.

 

I believe this was a very short lived idea that was soon replaced with the traditional rack and pinion. If not, then there may have been two suppliers for the focuser housings.

Not to get too far off topic, but I wanted to add more information on the uncommon style of focuser draw tube R & P that I have on my Tasco 304 Power from early 1959 to mid 1959 per my dating assumption and sales receipt May 1959.

 

I have seen a few other examples of this style of focuser on other 1959 time frame scopes. One is a Tasco 12TE Circle T version. Another is an Astro Optical version of an SPI 527 6301 60mm x 1200mm with the same internal rack design compared to Royal R61 external R & P.

 

I'm sure there are others, but I can't recall at the moment other examples that have been posted here on CN.

 

See photos of above mentioned focusers for reference.

 

PS:  Going back earlier, there are all sorts of branded 60/62mm x 800mm Asahi or Towa scopes that also used the internal R & P style of focuser as many of your are aware of.

Attached Thumbnails

  • Example SPI 527 6301 Internal R&P_Royal R61 External R&P_.jpg
  • Example Name Tags_SPI 527 6301 Internal R&P_Royal R61 External R&P_.jpg
  • Focuser Name Tag_Achromatic Coated Lens JAPAN.jpg
  • Tasco 12TE Circa 1959_Focuser Parts_Internal R & P Example.JPG

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#61 deSitter

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Posted 11 April 2018 - 02:41 PM

That's quite the hybrid, Mel.

 

I almost stuck a 2" focuser on my 60mm f/20 SPI, but couldn't go through with it.  Settled for a 1.25" visual back on the stock drawtube.

 

What we need is a hybrid diagonal designed to accept 2" eyepieces but fit in a .965" focuser.  lol.gif

I've got this :)

 

-drl



#62 deSitter

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Posted 11 April 2018 - 02:43 PM

Not to get too far off topic, but I wanted to add more information on the uncommon style of focuser draw tube R & P that I have on my Tasco 304 Power from early 1959 to mid 1959 per my dating assumption and sales receipt May 1959.

 

I have seen a few other examples of this style of focuser on other 1959 time frame scopes. One is a Tasco 12TE Circle T version. Another is an Astro Optical version of an SPI 527 6301 60mm x 1200mm with the same internal rack design compared to Royal R61 external R & P.

 

I'm sure there are others, but I can't recall at the moment other examples that have been posted here on CN.

 

See photos of above mentioned focusers for reference.

 

PS:  Going back earlier, there are all sorts of branded 60/62mm x 800mm Asahi or Towa scopes that also used the internal R & P style of focuser as many of your are aware of.

I have this focuser on a cut-down click zoomer and it ROCKS. My favorite classic focuser!

 

https://www.cloudyni...-you/?p=8476037

 

-drl


Edited by deSitter, 11 April 2018 - 02:45 PM.


#63 dawsonian2000

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Posted 11 April 2018 - 03:52 PM

That's quite the hybrid, Mel.

 

I almost stuck a 2" focuser on my 60mm f/20 SPI, but couldn't go through with it.  Settled for a 1.25" visual back on the stock drawtube.

 

What we need is a hybrid diagonal designed to accept 2" eyepieces but fit in a .965" focuser.  lol.gif

Hey Chuck!

 

I should have mentioned; this is actually a 1.25" focuser. But, it does look like a 2" incher! lol.gif

 

 

Thanks,

Mel


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#64 DreamWeaver

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Posted 11 April 2018 - 10:47 PM

Stephen, mine has the external rack draw tube.

 

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#65 rwiederrich

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Posted 12 April 2018 - 09:04 AM

Interesting difference on the rack-n-pinion designs. 

My 60mm is mounted as a spotter on my custom 6" f/15.

 

Not a good image though.

 

Rob

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#66 DreamWeaver

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Posted 12 April 2018 - 09:23 AM

shocked.gif  I'm guessing it takes more than two trips from the garage to get that set up!  lol.gif



#67 rayden68

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Posted 12 April 2018 - 11:55 AM

"The Yellow grab and go" has a nice ring to it.


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#68 Chuck Hards

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Posted 12 April 2018 - 12:30 PM

"The Yellow grab and go" has a nice ring to it.

Especially when you whack the pier with a 2x4...  ;)


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#69 rwiederrich

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Posted 12 April 2018 - 02:40 PM

shocked.gif  I'm guessing it takes more than two trips from the garage to get that set up!  lol.gif

Actually it simply rolls out as it is....just plug it in.

 

I currently have it on R/R tracks...so it is even easier.

 

The Tasco was the model for the 6".

 

Rob


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#70 Stargoat

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Posted 12 April 2018 - 03:32 PM

Stephen, mine has the external rack draw tube.

Thanks for letting me know Keith!!

 

Of the four known 046XXX Tasco 304 Power scopes that do not have the Astro Optical stamp next to the serial number, only 046172 has the internal rack machined into the draw tube.

 

Serial numbers 046313/331/366 have the standard style R & P arrangement. So l'm assume that between 046172 and 046313 the change was made.

 

Jumping ahead, the next group of 046XXX scopes with lowest serial number found so far is 046444. Among several revisions, most note worthy is the Astro Optical stamp is now found next to the serial number.


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#71 rwiederrich

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Posted 14 April 2018 - 08:19 PM

Here is a pic of the Tasco with a conversion diagonal.

 

The chrome was removed from the brass draw tubes of both spotters to mimic the gold anodized draw tube of the 6"f/15

 

Rob

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#72 droid

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Posted 15 April 2018 - 04:35 AM

Mine, I've owned for  over two decades, and its a user not a show piece , I've taken countless thousands of lunar images with it.

 

60x1000 , serial # 76052 w/ the RAO symbol

 

 

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#73 droid

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Posted 15 April 2018 - 04:40 AM

Here is a pic of the Tasco with a conversion diagonal.

 

The chrome was removed from the brass draw tubes of both spotters to mimic the gold anodized draw tube of the 6"f/15

 

Rob

Nice Rob; wondering how you were doing, pm me let me know how your doing bud.



#74 LarsJ

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Posted 05 July 2018 - 03:11 PM

Here is my stock 1969 7TE-5.  This was my first classic telescope purchase, via Craigslist from a resale shop in Milwaukee for all of $75.  Optically flawless, it is overall in excellent condition and gives great views as expected!

 

 

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#75 rogue river art

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Posted 04 December 2019 - 06:28 PM

Bought my first scope in 57 at age 14. It was a 60 mm tasco. Seems like I paid $100 for it. I used it so much that I may have worn out the objective.lol.gif  I bought a 60 mm Mayflower last year and it's almost like new for $50.


Edited by rogue river art, 04 December 2019 - 06:30 PM.

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