Spyglass Astronomy

Evidence

Ran on Kiln's test stand (2026-11-04): SpyglassAstronomyClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/chat/TextColor.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.systems.RenderSystem.AutoStorageIndexBuffer
• com.mojang.blaze3d.vertex.BufferBuilder
• com.mojang.blaze3d.vertex.ByteBufferBuilder
• com.mojang.blaze3d.vertex.DefaultVertexFormat
• com.mojang.blaze3d.vertex.MeshData
• com.mojang.blaze3d.vertex.MeshData.DrawState
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.blaze3d.vertex.PoseStack.Pose
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.math.Axis
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.buffers.GpuBufferSlice
• com.mojang.renderpearl.api.commands.RenderPass
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.api.pipeline.BlendFunction
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.PrimitiveTopology
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• com.mojang.renderpearl.api.vertex.VertexFormat
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents.StartLevelTick
• net.minecraft.client.Camera
• net.minecraft.client.Options
• net.minecraft.client.multiplayer.ServerData
• net.minecraft.client.renderer.BindGroupLayouts
• net.minecraft.client.renderer.DynamicGpuData
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.client.renderer.texture.TextureAtlas
• net.minecraft.client.renderer.texture.TextureAtlasSprite
• net.minecraft.client.resources.model.sprite.AtlasManager
• net.minecraft.client.server.IntegratedServer
• net.minecraft.commands.arguments.MessageArgument
• net.minecraft.commands.arguments.MessageArgument.Message
• net.minecraft.data.AtlasIds
• net.minecraft.network.chat.ClickEvent
• and 32 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Draw your own constellations on an interactive and improved night sky. An immersive overhaul of the space skybox, including planets and better stars.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file spyglass_astronomy-1.0.27-mc26.3.jar. The scan reads the mod's classes; it does not run them.