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[bmatthieu3]

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[hiro1616hiro]

I'm using a translation app to translate Japanese into English, so the sentences might sound a bit strange, but please bear with me.

My name is hiro1616hiro and I live in Japan.
I mainly do live stacks of galaxies with a 30cm reflecting telescope and CMOS camera.
I also use Aladin Lite and Stellarium to select objects to observe.
I already have several thousand observation lists.
For objects on my list, such as "NGC●●●," I get links using Aladin Lite's Get view URL on the web, and paste the link into the object name so I can reproduce the field of view at any time.
Incidentally, the link also includes the field of view obtained with the combination of a telescope and CMOS camera, such as "fov=0.54," which allows me to display Sky Survey images at any scale in portrait, landscape, or square browser windows.

I create lists like this every day, but two days ago, suddenly, only a zoomed-out image was displayed in portrait browser windows.

My guess is that the "fov" value is applied only to the browser's width, and the display is based on that, resulting in a wide-angle view.

This issue may be due to a change in Aladin Lite specifications, but is it possible to revert to the previous specifications that are not affected by the browser window shape?

If the reproducibility of the screen and angle of view using links can no longer be maintained, I will have to rewrite some of the links in my list, which I think would be quite a hassle.

I would appreciate it if you could consider this matter.

Thank you in advance.
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[bmatthieu3]

Hello @hiro1616hiro,

There has been indeed an update into Aladin Lite website: https://aladin.cds.unistra.fr/AladinLite

I am not sure to understand the issue: when I click on Get view URL I get an url that contains the fov/survey/target params and pasting it into another browser tab still gets me a view at the same target/fov/survey (the rotation tough is lost in the url but fov and target are saved). Can you maybe send steps to reproduce it with maybe screenshots/image attached so that I can understand what is the problem. Can you give me urls that do not work anymore ?

Many thanks to you.
Matthieu

[hiro1616hiro]

返信　ありがとうございます。
すみませんが、正確を期するため日本語で記述します。

これまで、Aladin Liteの｢Get view URL｣で次のようなリンクを取得し、
https://aladin.cds.unistra.fr/AladinLite/?target=05%2042%2004.633%2B69%2022%2042.41&fov=0.54&survey=P%2FDSS2%2Fcolor
Excel上の｢ (Arp 184)NGC 1961 + PGC 17659 + PGC 17642（中心　NGC 1961）｣といった文字にリンクを貼り付けていました。

このリンクをクリックすると、


このように、ブラウザのウインドウが縦長でも、横長でも、URL取得時と同じ尺度で、視野を再現出来ました。

しかし、数日前から、縦長のウインドウだと、次のようにズームアウトするようになったのです。

因みに、横長のウインドウは、以前と同じ尺度で表示されます。

この点は、｢fov=0.54｣といった数値が同じでも、ウインドウの形状によって、ウインドウ内での対象の見かけの割合が、大きくなったり、小さくなったりすることを意味します。
この割合が、以前のように固定されていると使いやすいのですがね。
※｢fov=0.54｣は、焦点距離1,200mmの望遠鏡に1/1.2インチCMOSカメラを組み合わせた場合の視野角です。

私のような、視野を再現するといった使い方をしているのは、レアケースだと思われますが、一考してもらえないかと切に希望しています。

なお、今回のアップデートで、この尺度の件が固定化されるのであれば、私が蓄積してきたリンクの一部の文字を書き換えします。

すみませんが、コメントいただけますよう、よろしくお願いいたします。

[hiro1616hiro]

I would like to add a bit more information regarding my previous email.

The following images show examples of the display in a vertical and horizontal window when "fov=0.54" is specified.

Even though both windows have "fov=0.54" and are roughly the same area, the object in the vertical window appears relatively much smaller.

Before the update, objects in vertical windows were displayed at the same size as in horizontal windows.

This is thought to be because zooming in and out now depends on the width of the window.

It seems more logical and easier to use if the display were fixed at an absolute value and zooming in and out was controlled using the "+" and "-" buttons in the bottom left of the window.

Thank you for your consideration.

[tboch]

apologies, I was unaware of this Discussion session. Thanks for opening an issue!

[hiro1616hiro]

I would like to add a bit more information regarding my previous email.

The following images show examples of the display in a vertical and horizontal window when "fov=0.54" is specified.

Even though both windows have "fov=0.54" and are roughly the same area, the object in the vertical window appears relatively much smaller.

Before the update, objects in vertical windows were displayed at the same size as in horizontal windows.

This is thought to be because zooming in and out now depends on the width of the window.

It seems more logical and easier to use if the display were fixed at an absolute value and zooming in and out was controlled using the "+" and "-" buttons in the bottom left of the window.

Thank you for your consideration.

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