ModsFinder

Spyglass Astronomy Sync

by fliplus

With Spyglass Astronomy Sync installed, servers can send the Spyglass Astronomy settings to every connected player, so the two sides stay matched.

FabricClient and serverGNU Lesser General Public License v3.0 onlyOpen source1.21 – 26.3

What it does

The mod is a Fabric companion to Spyglass Astronomy and cannot run alone. Fabric API and Spyglass Astronomy are both required. Its job is to keep the client and server copies of the Spyglass Astronomy setup aligned during a multiplayer session, so a player joins with the same configuration the server uses.

The configuration file is read only when the server starts, so changes made while the server is running take effect after a restart. Server owners can allow or block admin commands for the sga:admin set and note features, and admin access is limited to the operators the server grants it to. Both the server and every player need the mod installed for the synchronization to take effect.

Spyglass Astronomy Sync runs on client and server and is published for Fabric only. Files cover 1.21 – 26.3 across 17 release versions, the latest being 1.1.1+26.3 for 26.3, and the code is released under the GNU Lesser General Public License v3.0 only, so it is open source.

Key features

  1. Server-to-client synchronization

    Settings from the server are passed to connected players so that both sides apply the same Spyglass Astronomy behavior.

  2. Admin command control

    A config option decides whether the sga:admin commands are available to players, and the server can switch them off.

  3. Startup-only configuration

    The configuration file is read only at server startup, so edits need a server restart before they apply.

  4. Multiplayer focus

    The mod is built for multiplayer sessions, where client and server copies of the astronomy setup must agree.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.31.1.1+26.3
26.21.1.1+26.3
26.1.21.1.1+26.3
26.1.11.0.0+26.1.2
26.11.0.0+26.1.2
1.21.x12 of 12 versions with builds
1.21.111.0.0+1.21.11
1.21.101.0.0+1.21.10
1.21.91.0.0+1.21.10
1.21.81.0.0+1.21.8
1.21.71.0.0+1.21.8
1.21.61.0.0+1.21.8
1.21.51.0.0+1.21.8
1.21.41.0.0+1.21.8
1.21.31.0.0+1.21.8
1.21.21.0.0+1.21.8
1.21.11.0.0+1.21.8
1.211.0.0+1.21.8
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Spyglass AstronomyDraw your own constellations on an interactive and improved night sky. An immersive overhaul of the space skybox, including planets and better stars.
Required
Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Use cases

Who it’s for: Server owners running Fabric who use Spyglass Astronomy and want players to see the same sky setup as the server. Single-player players have little reason to install it.

Questions

Does Spyglass Astronomy Sync need Fabric API?

Yes. Fabric API is listed as a required dependency, and Spyglass Astronomy is required as well. Both must be installed next to this mod.

Do players need the mod if the server has it?

Yes. The environment is client and server, so both the server and every player need Spyglass Astronomy Sync for the synchronization to take effect.

Why do config changes need a restart?

The configuration file is only read when the server starts. After editing it, restart the server for the changes to take effect.

In the catalog

Spyglass Astronomy Sync is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 8,071 mods support Minecraft 26.3.

Decoration mods12,078Fabric modsMods for 26.38,071

More from fliplus

All projects
Amplified Nether Height1.18.2 – 26.3Simple Player Heads1.20 – 1.21.8Simple Player List1.21 – 26.3No Rest For The Living1.21.9 – 1.21.11

Similar mods

[ETF] Entity Texture Features1.16.5 – 26.3Not Enough Animations1.16.5 – 26.3Continuity1.17.1 – 26.3LambDynamicLights - Dynamic Lights1.16.2 – 26.3Presence Footsteps1.7.10 – 26.3AmbientSounds1.12.2 – 26.3

What the author says

Both the server and the client must have Spyglass Astronomy Sync installed for the synchronization to take effect.
fliplus, on the Modrinth page

Official listing

Owner
fliplus
Published
2025-09-25
Updated on Modrinth
2026-09-28
Facts verified
2026-10-15

Tags

Decoration
Open on ModrinthCompare