On the Construction of a Silvered Glass Telescope / Fifteen and a half inches in aperture, and its use in celestial photography
by Henry Draper
Listen FreeFree AI audiobook with natural voice. No signup required.
Chapters (71)
- On the Construction of a Silvered Glass Telescope
- CONTENTS.
- AN ACCOUNT OF THE CONSTRUCTION AND USE OF A SILVERED GLASS TELESCOPE.
- §1. GRINDING AND POLISHING THE MIRRORS.
- (1.) Experiments on a Metal Speculum.
- (2.) Silvering Glass.
- (3.) Grinding and Polishing Glass.
- (4.) Eye-Pieces, Plane Mirrors and Test Objects.
- §2. THE TELESCOPE MOUNTING.
- §3. THE CLOCK MOVEMENT.
- §4. THE OBSERVATORY.
- §5. THE PHOTOGRAPHIC LABORATORY.
- §6. THE PHOTOGRAPHIC ENLARGER.
- FOOTNOTES:
- iii
- iv
- v
- vi
- vii
- viii
- xiii
- xiv
- 1
- 3
- 5
- 6
- 7
- 8
- 9
- 11
- 12
- 13
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 53
- 54
- 55
How to Listen
- 1. Click "Listen Free" above
- 2. The book opens in CastReader's browser reader
- 3. Click the play button — AI narration starts with word highlighting
- 4. Use "Send to Phone" to continue listening on your phone
FAQ
Is this audiobook really free?
Yes. "On the Construction of a Silvered Glass Telescope / Fifteen and a half inches in aperture, and its use in celestial photography" is a public domain work from Project Gutenberg. CastReader converts it to audio using AI text-to-speech for free. No account or payment needed.
What does the AI voice sound like?
CastReader uses Kokoro TTS, a natural-sounding AI voice. It handles punctuation, names, and dialogue naturally. Most listeners forget it's AI after a few minutes.
Can I listen on my phone?
Yes. Open the book, then use "Send to Phone" to stream audio to your phone via Telegram. No app download needed.