AstroShader1.2.7 - App Store

One-time purchase. No subscription.

AstroShader is an astrophotography app for capturing, stacking and editing. All you need is a stand, tripod, telescope or rock (to lean your phone on).

AstroShader lets you align and stack live during the image capture process. You can also align and stack images from you Photos library. No need to transfer images to a computer to align and stack them separately (but there is a built in intervalometer if you need it).

To take an image follow these steps:
. Use a stand, tripod, telescope mount (or lean your iPhone on a rock).
. Zoom in on stars and set focus manually, or use autofocus.
. Set the exposure time, ISO and white balance, or leave to auto-exposure.
. Set the number of exposures to be automatically aligned and stacked.
. Calibrate your images from the edit tools.
. After the capture is complete you can edit and save your image-including as 16bit TIFF.
. You can open images directly to use the edit tools in AstroShader - rather following a new image capture.

Image capture options include:
. Number of exposures to be aligned and stacked
. Exposure time
. ISO
. White balance
. Camera type
. Countdown timer
. Manual focus
. Pause the capture to reposition iPhone or telescope

Edit options include:
. Stretch image
. Background extraction
. Dynamic background extraction (DBE)
. x5 Histogram curves for fine tonal adjustment
. x3 sharpen layers each with radius and intensity with layer blending rather than chaining
. Brightness (low light enhancement)
. Saturation
. Black point
. Temperature
. Tint
. Save format options; HEIF, PNG, JPEG, TIFF

Version History - Bug fix for image timestamps following edits
- Various UI layout fixes 1.2.7 Sep 17 Make TIFFs compatible with Siril, Astro Pixel Processor, and other tools. 1.2.6 Aug 27 - "Default" render pipeline will have higher quality
- Resolves an autofocus UX bug 1.2.5 Aug 19 - The people have spoken! Camera settings will now save after they are edited rather than only after a capture
- Various stability improvements (that hardly anyone will notice)
- Bug fix for a crash when shooting straight after app launch
- Various small UI improvements to prevent accidentally changing settings or tapping random buttons 1.2.4 Aug 13 Stack images from your Photos library:
- Choose photos from your library to stack (can be captured with any app or imported from an external camera)
- Set the stacking options and go
- Use the "enhanced" alignment method for images with lots of movement 1.2.3 Aug 5 Bug fixes and improvements to alignment

New advanced option: Choice of rendering pipeline 1.2.2 Jul 25 Fixes:
- Alignment issues
- Exposure level not being set correctly under certain circumstances 1.2.1 Jul 15 Major version update...

General:
- New UI
- Major platform update with stability improvements

Camera:
- Auto-exposure option
- Auto-focus option
- Preview alignment crosshairs

Editing:
- Dynamic background extraction (DBE) workflow
- Denoise tool
- Upgraded details levels with de-ringing tool
- Open and edit RAW files 1.2.0 Jun 26 Adds walking noise reduction stacking algorithm (active by default) 1.0.38 Mar 10 - Fixes a shamefully bad bug that meant the alignment process was deactivated during realignment.
- Adds 5s countdown timer.
- UI changes: Slider height touch area. 1.0.37 Feb 23 UI update, that no one asked for.
Minor bug fixes. 1.0.36 Jan 11 Focus peaking:
- Highlight in focus stars / regions
- 3 Modes: Always on, only when focussing, off
- Focus peaking threshold can be manually set
- Saved as per other settings against camera defaults

Bugs fixes and performance improvements for image editing 1.0.35 12/06/2025 - Various fixes for iPhone17 support
- v2 Alignment deprecated (temporarily)
- Ability to turn alignment off e.g. star trails mode 1.0.34 10/26/2025 Vanquished numerous bugs and gremlins. 1.0.33 10/09/2025 Bug fix: Crash on initiating a capture under certain conditions 1.0.32 09/21/2025 Switch to new guide under info section. 1.0.31 09/20/2025 v2 Alignment algorithm:
- "v2" alignment option available in settings
- This will initially be rolled out for testing in the wild before eventually completely replacing the existing algorithm

Major changes to the camera pipeline:
- There are no "visible" changes here but the aim is to make the app more stable

Snap-to-level zoom:
- Zoom level is now displayed and will always snap to 1 decimal place
- The was done in response to requests to help people who are shooting stacks-of-stacks and for calibration frames

Various bug fixes, including:
- The countdown timer would occasionally ...not actually count downwards, this has been fixed
- Fix for a crash when loading up the app from a cold start on certain devices 1.0.30 08/23/2025 "Details" editing tool:
- Enhance details at different scales within an image.
- Combine the details sliders to selectively pull out features within an image. 1.0.29 03/27/2025 An almost unnoticeable change to make white balance auto, however this can still be set manually in the advanced options. 1.0.28 03/03/2025 By popular demand.... an intervalometer has been added.

You can now save all your individual exposures (subs data). 1.0.27 01/24/2025 New "Stretch Image" slider in the edit tools:
- This works is bit like an adaptive contrast tool.
- More prominent image features are "stretched" revealing more detail, and darker background features are diminished. 1.0.26 12/09/2024 - New and improved background removal tool. 1.0.25 12/06/2024 - Bug fix for camera preview and finalise option 1.0.24 11/01/2024 - Fixes a disappointing iOS18 bug affecting the camera preview 1.0.23 10/30/2024 - Bug fix affecting camera preview and restart 1.0.22 10/28/2024