The Keck-I Cassegrain atmospheric dispersion corrector

Phillips, Andrew C.; Miller, Joseph S.; Cowley, David J.; Wallace, Vernon

doi:10.1117/12.672469

Cited by 22 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In cases where our groundbased imaging was able to clearly resolve the host, the slit was aligned with the major axis of the galaxy to minimize slit losses (in all cases a 1″ slit was used); otherwise, the parallactic angle (Filippenko 1982) was used. LRIS is equipped with an atmospheric dispersion corrector (Phillips et al 2006), so flux losses associated with nonparallactic angles are minimal. A few systems (PTF 10uhf, PTF 10tpz, PTF 11rks) exhibit large, resolved hosts that cannot be easily accommodated in the slit; both of these systems appear to be special cases and are discussed individually later.…”

Section: Spectroscopymentioning

confidence: 99%

Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae From the Palomar Transient Factory

Perley

Quimby

Yan

et al. 2016

ApJ

243

346

View full text Add to dashboard Cite

We present ultraviolet through near-infrared photometry and spectroscopy of the host galaxies of all superluminous supernovae (SLSNe) discovered by the Palomar Transient Factory prior to 2013 and derive measurements of their luminosities, star formation rates, stellar masses, and gas-phase metallicities. We find that TypeI (hydrogen-poor) SLSNe (SLSNe I) are found almost exclusively in low-mass ( * <´ M M 2 10 9) and metal-poor (12+log 10 [O/ H] < 8.4) galaxies. We compare the mass and metallicity distributions of our sample to nearby galaxy catalogs in detail and conclude that the rate of SLSNe I as a fraction of all SNe is heavily suppressed in galaxies with metallicities   Z 0.5 . Extremely low metallicities are not required and indeed provide no further increase in the relative SLSN rate. Several SLSN I hosts are undergoing vigorous starbursts, but this may simply be a side effect of metallicity dependence: dwarf galaxies tend to have bursty star formation histories. TypeII (hydrogen-rich) SLSNe (SLSNe II) are found over the entire range of galaxy masses and metallicities, and their integrated properties do not suggest a strong preference for (or against) low-mass/low-metallicity galaxies. Two hosts exhibit unusual properties: PTF 10uhf is an SLSN I in a massive, luminous infrared galaxy at redshift z=0.29, while PTF 10tpz is an SLSN II located in the nucleus of an early-type host at z=0.04.

show abstract

Section: Spectroscopymentioning

confidence: 99%

Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae From the Palomar Transient Factory

Perley

Quimby

Yan

et al. 2016

ApJ

243

346

View full text Add to dashboard Cite

show abstract

“…To date, the only large optics coated with this coating are the two 1.05-m Keck-I Cassegrain ADC prisms 15 , which operates over the range from 0.31-to-1.1 µm. The MgF2 and Al2O3 were deposited on the prisms in the Lick vacuum chamber, then the prisms were transferred to the Strasbaugh table for spin-coating.…”

Section: Broadband Sol-gel/mgf2 Coatingsmentioning

confidence: 99%

Progress toward high-performance reflective and anti-reflection coatings for astronomical optics

et al. 2008

Self Cite

View full text Add to dashboard Cite

There is a continued need for efficient reflective and anti-reflection (AR) coatings for increasingly large optics in astronomy. The requirements for these coatings differ in several respects from those developed for commercial use. In general, they require a broad spectral coverage, high-efficiency, long life under semi-exposed conditions, and the ability to be removed without damage to expensive substrates. UCO/Lick Observatory has undertaken an effort to develop improved coatings for astronomical optics. In this paper, we report on progress toward (a) robust protected silver coatings for telescopes; (b) enhanced silver and aluminum coatings for instruments; and (c) hardened sol-gel AR coatings. Examples of some of our new coatings are in use at Lick and Keck Observatories. The problems involved in successful coatings are multifaceted and we summarize our major findings to date. This includes our requirements, test procedures, and performance and durability results for the three types of coatings mentioned.

show abstract

“…The optical and opto-mechanical feasibility of a large ADC of this type and approximate size (~1m) has been demonstrated by the ADC for the Keck telescope. 3 A detailed optomechanical model of the ADC will be developed in the second half of the MOBIE conceptual design phase.…”

Section: Atmospheric Dispersion Correctormentioning

confidence: 99%

Progress of the conceptual design for the MOBIE imaging spectrograph for the Thirty Meter Telescope

Bigelow

Bernstein

2010

SPIE Proceedings

View full text Add to dashboard Cite

The Multi-Object Broadband Imaging Echellette (MOBIE) is the seeing-limited, wide-field multi-object optical imaging spectrograph planned for first-light operation on the Thirty Meter Telescope (TMT). Following the completion of a feasibility study and requirements review in December 2008, the MOBIE instrument project, based at the University of California Observatories (UCO) on the UC Santa Cruz campus, entered a conceptual design phase. In this paper, we describe the latest developments in the instrument optical design, and progress in the conceptual design of the optomechanical and mechanical elements for the instrument.

show abstract

The Keck-I Cassegrain atmospheric dispersion corrector

Cited by 22 publications

References 4 publications

Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae From the Palomar Transient Factory

Host-Galaxy Properties of 32 Low-Redshift Superluminous Supernovae From the Palomar Transient Factory

Progress toward high-performance reflective and anti-reflection coatings for astronomical optics

Progress of the conceptual design for the MOBIE imaging spectrograph for the Thirty Meter Telescope

Contact Info

Product

Resources

About