What did the postman bring? V2

[Ratlet]

1 hour ago, Ags said:

only look at very, very small sections of sky and you can treat the celestial sphere as flat  

But how can you improve milk production from dairy cows if you don't understand spherical trigonometry?

https://en.wikipedia.org/wiki/Spherical_cow

[Chaz2b]

Pricey but well made and very easy to use, need to drill and tap another hole in the bottom of the dovetail.

It has very good ergonomics, handles are easy to access and both axes move smoooooothly!

chaz

I've found a suitable hex bolt to replace the one you see on the right of the bar. Would like to make it a quick release but the only vixen style clamp I have is too small, but only just.

On the look out or even a suggestion of a better solution?

Edited July 2 by Chaz2b

[saac]

Got round to upgrading my 3D Printer. The Ender 5 had served me very well but it was time to take advantage of some improvements in the 3D printing world, most notably speed, heated enclosure, input shaping and first layer fault detection. This thing (Creality K1 Max) is fast with a large build plate (300 x 300 mm).  Having much fun experimenting with it at the moment.  The second photo shows the bottom half of a DNA model for school; printed in half the time of the old printer  

Jim 

[saac]

On 02/07/2024 at 00:56, Ratlet said:

But how can you improve milk production from dairy cows if you don't understand spherical trigonometry?

https://en.wikipedia.org/wiki/Spherical_cow

Those spherical farmyard creatures have got me out of many a tight spot over the years. Almost as elusive as the mythical frictionless slope  

Jim 

 

[Vroobel]

Thanks to mpb.com and DPD I have two new to me lenses, both used but in excellent working condition. Tamron 17-35mm F/2.8-4 Di OSD as 28mm one appeared too narrow for NLCs, it will be used mostly for astrophotography and events in the sky. Also, Canon 28-135mm F/3.5-5.6 IS USM for typical use. 

A lot of night tests ahead... 😁

 

 

Edited July 3 by Vroobel

[Dave scutt]

I thought I was giving up last year due to illness .

Then this came along.

[bosun21]

Postal delivery today of a Lynx Astro cable, a 40mm T2 extension for my flip mirror and a new air blower.

 

 

[Nakedgun]

21 hours ago, Dave scutt said:

I thought I was giving up last year due to illness .

Then this came along.

~

Synta carbon-fiber 120?

 

 

.

Edited July 4 by Nakedgun

[Dave scutt]

1 minute ago, Nakedgun said:

~

Synta carbon-fiber 120?

 

 

.

Skywatcher 100ED, old gold version, the previous owner wrapped it in carbon fiber as the tube rings scratched the gold

[JeremyS]

Another interesting biography. 

[Emperor!Takahashi!]

The postman brought something extra special today.

Now he must stay away for a while, except to carry away all of the items I'm selling to finance this one!

[RobertI]

38 minutes ago, Emperor!Takahashi! said:

The postman brought something extra special today.

Now he must stay away for a while, except to carry away all of the items I'm selling to finance this one!

Wow! Now I understand why you’ve been selling so much kit recently! 😆 These should be something special, look forward to a full report. 👍

[Alan White]

Been away for Summer holidays so now unpacking some much awaited goodies, 

First up the replacement custom made focuser for my LS40 Ha scope, from Adriano Lolli in Italy, it looks great and fits great and works with no slip.

Edited July 6 by Alan White

[JeremyS]

Thousand Oaks filter for TSA 120

[Alan White]

Just for a moment, I thought you had a second TSA @JeremyS!

 

[JeremyS]

2 minutes ago, Alan White said:

Just for a moment, I thought you had a second TSA @JeremyS!

 

Shhh 🤫 

[josefk]

On 05/07/2024 at 23:59, Emperor!Takahashi! said:

The postman brought something extra special today.

Now he must stay away for a while, except to carry away all of the items I'm selling to finance this one!

oooof. VERY nice!

[JAC51]

On 05/07/2024 at 23:59, Emperor!Takahashi! said:

The postman brought something extra special today.

Now he must stay away for a while, except to carry away all of the items I'm selling to finance this one!

Now I understand all the sacrificial for sale items. 

You have invoked one of the Great Gods  of optical perfection.

[Emperor!Takahashi!]

On 06/07/2024 at 00:39, RobertI said:

Wow! Now I understand why you’ve been selling so much kit recently! 😆 These should be something special, look forward to a full report. 👍

 

1 hour ago, josefk said:

oooof. VERY nice!

 

50 minutes ago, JAC51 said:

Now I understand all the sacrificial for sale items. 

You have invoked one of the Great Gods  of optical perfection.

Thank you 😸

I want to spend time with them under dark skies before writing up a more thorough observing report. That's especially because these are the 7x50, which I bought instead of the 10x50 because 1) I do not want to need to use a tripod with them, and 2) using them under dark skies is my intention.

With that said, I had them up on the rooftop in London last night, and the word that seems most apt is "magnificent." 

I was sitting there looking at Lyra in its entirety... so vivid, so sharp. It was like what I see through a superb refractor and binoviewer, but with an ~11° FOV. I cannot imagine a more perfect view, and I cannot wait to use them under the dark skies that they're made for.

I do not say this with the desire to gush or to denigrate other binoculars: these are almost like a totally different instrument. The view is different to the extent that my mind does not even want to classify them as a binocular. Of course, they are binoculars. But it feels like some other word is warranted to classify them more accurately.

[Dave scutt]

1 hour ago, Emperor!Takahashi! said:

 

 

Thank you 😸

I want to spend time with them under dark skies before writing up a more thorough observing report. That's especially because these are the 7x50, which I bought instead of the 10x50 because 1) I do not want to need to use a tripod with them, and 2) using them under dark skies is my intention.

With that said, I had them up on the rooftop in London last night, and the word that seems most apt is "magnificent." 

I was sitting there looking at Lyra in its entirety... so vivid, so sharp. It was like what I see through a superb refractor and binoviewer, but with an ~11° FOV. I cannot imagine a more perfect view, and I cannot wait to use them under the dark skies that they're made for.

I do not say this with the desire to gush or to denigrate other binoculars: these are almost like a totally different instrument. The view is different to the extent that my mind does not even want to classify them as a binocular. Of course, they are binoculars. But it feels like some other word is warranted to classify them more accurately.

Those dark skies in Cork will be brilliant for them.

[Pixies]

New (to me) tripod.

[Alan White]

Post opened on next item from here in the classifieds.

A very nice 2” TS Concentre

 

I can now see how close my previous alignments were.

[PatientObserver]

My Gitzo gear center column arrived for my Gitzo Systematic Series 5 tripod. Both of which I found for about 50% off. Alas, I am traveling and will not be home for another couple weeks (hence the reason my post lacks pictures).

The plan is to use it with my Super Mount S-Mini as my light weight setup.

[Ratlet]

Birthday presents arrived.  Continuing the playing with microcontrollers theme so I can build be some cheap astronomy toys.

Also got a history of astronomy.  Probably should read the descriptions as i didn't realise this history of astronomy was written in 1651 lol.  Wonder what they have to say about Sir Patrick?

[Alan White]

14 minutes ago, Ratlet said:

Birthday presents arrived.  Continuing the playing with microcontrollers theme so I can build be some cheap astronomy toys.

Also got a history of astronomy.  Probably should read the descriptions as i didn't realise this history of astronomy was written in 1651 lol.  Wonder what they have to say about Sir Patrick?

Reading descriptions is like instructions, only when it will not work or breaks.

Happy Birthday too 🎂