# Options under the photo

**URL:** https://forum.telescopius.com/t/options-under-the-photo/1269
**Category:** General Questions
**Created:** [October 5, 2024, 3:57pm UTC](https://forum.telescopius.com/t/options-under-the-photo/1269 "2024-10-05T15:57:44Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Rob\_Frean](https://forum.telescopius.com/user_avatar/forum.telescopius.com/rob_frean/32/728_2.png) [@Rob\_Frean](https://forum.telescopius.com/u/Rob_Frean)
#### Post date: [October 5, 2024, 3:57pm UTC](https://forum.telescopius.com/t/options-under-the-photo/1269/1 "2024-10-05T15:57:44Z")

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Hi to all,

Just a question; under all the photo there are some butons. Alle are clear to me, except the one ‘invered’. I you turn it on you get a negetive image. Why would you whant to see that?

 ![2024-10-05 17_51_51-Telescopius - IC 443 Jellyfish Nebula_2023-02-18 - byRob_Frean](https://forum.telescopius.com/uploads/default/original/1X/3f3aeeecf44f5a39fd12c448c26869463d5be7d4.png)

Best Regards,  
Rob.

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### Author: ![nico1038](https://forum.telescopius.com/user_avatar/forum.telescopius.com/nico1038/32/299_2.png) [@nico1038](https://forum.telescopius.com/u/nico1038)
#### Post date: [October 7, 2024, 4:13pm UTC](https://forum.telescopius.com/t/options-under-the-photo/1269/2 "2024-10-07T16:13:07Z")

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Hi Rob,

Inverted image is something that is widely used for astronomical images. It allows a better detection of diffuse objects by representing them in dark tones on a white background.  
Here is an example:[https://www.universetoday.com/wp-content/uploads/2011/09/SN101\_brimacombe.jpg](https://www.universetoday.com/wp-content/uploads/2011/09/SN101_brimacombe.jpg)

Nico

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### Author: ![Rob\_Frean](https://forum.telescopius.com/user_avatar/forum.telescopius.com/rob_frean/32/728_2.png) [@Rob\_Frean](https://forum.telescopius.com/u/Rob_Frean)
#### Post date: [October 8, 2024, 6:41am UTC](https://forum.telescopius.com/t/options-under-the-photo/1269/3 "2024-10-08T06:41:17Z")

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Hi Nico,

Thanks for explaning. I’ve been looking at some photo and indeed you can see things that are less visible in the normal way.

Beste regards,  
Rob.
