Astronomy Hacks: Tips and Tools for Observing the Night Sky

Index

[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z]

O'Neil Photo and Optical

O-III filters 2nd

objective lens

observing

     charts 2nd 3rd 4th 5th 6th

     clothing

     drinking and

    DSOs (deep-sky objects)

         averted vision

         dark adaptation

         elevation

         enhancement with filters 2nd 3rd 4th 5th 6th 7th 8th 9th 10th

         eyes 2nd

         instrument size

         motion and visibility

         patience and persistence

         tapping the tube

         varying magnification and FoV

    etiquette (see etiquette)

         nebula filters

     geometric navigation

     horizon obstruction

     impact of light pollution

     lens cleaning and

     naked eye versus astrophotography

     observing notebooks 2nd 3rd 4th 5th

     risks and safety guidelines 2nd 3rd 4th

     seating for 2nd 3rd 4th

     sketching and 2nd

     star hopping 2nd

     techniques

     temperature and equipment

     urban environments 2nd 3rd 4th 5th 6th 7th 8th

         appropriate targets

     urban observing 2nd 3rd 4th

observing notebooks

    observing

         design

occultations

occulting eyepieces 2nd

Oceanside Photo and Telescope

off-axis sub-aperture masks

optical collimation

optical finders

     aligning 2nd 3rd 4th

     designs

     determining field of view

     dovetail mount

     two-ring finder mounts

optical tube assembly (OTA) 2nd

opticals finder

    designs

         drift-testing method

    determining field of view

         drift-testing method

optics

     at observing sites

     cleaning fluids

Orion Mini-Giant series binoculars

Orion Scenix binoculars

Orion StarBlast 2nd

Orion Telescope and Binocular Center

Osypowski

OTA (optical tube assembly)

Oxygen-III filters